I was sitting in this small, dimly lit studio for a retrospective interview, and the producer handed me a stack of old production stills to look through.

Most of them were the usual shots of us standing around the Swamp or gathered near the helipad, but then I came across one particular black-and-white photo of the operating room.

It was a shot of me as Charles, mask on, looking incredibly intense and focused over a patient, and I just started laughing because I remembered exactly what was happening about five seconds after that shutter clicked.

You have to understand the environment of that set, especially the indoor scenes at Stage 9 on the Fox lot.

We had these massive studio lights that made the temperature on the floor hover somewhere around ninety-five or a hundred degrees, and we were all draped in heavy surgical gowns and masks.

It was grueling, and when you’re doing a heavy medical scene, the mood is usually quite somber and professional to honor the material.

For the surgical scenes, the prop department had this very specific recipe for what we called the innards.

It was a mixture of oatmeal, water, and red food coloring, which looked surprisingly realistic on the grainy film of the seventies.

Usually, it was fine, but on this particular day, we had been filming a very long, very complex sequence involving multiple casualties.

That bowl of oatmeal had been sitting under those blistering hot stage lights for nearly seven hours.

I was playing Winchester at his most arrogant, lecturing Hawkeye and B.J. about the sheer elegance of my technique compared to their meatball surgery.

I had this long, flowery monologue prepared about the Winchester family hands and how they were designed for the finest precision.

The air in the room was thick, and because the oatmeal was organic material, the heat was starting to do something rather scientific to it.

It was beginning to ferment, and the smell was becoming a character of its own in the scene.

I leaned in close to the patient’s open “abdomen” to deliver my final, most condescending line.

And that’s when it happened.

The oatmeal actually began to breathe.

Because of the fermentation and the heat, a massive air bubble had formed deep within the red-dyed mush, and just as I reached the climax of my arrogant speech, it let out a wet, loud, and unmistakable sound.

It sounded like the patient had developed the most violent case of flatulence in medical history.

The “patient,” who was an extra trying desperately to stay still, started shaking visibly because he was trying to suppress a laugh.

I stood there, frozen, with my surgical instrument poised in the air, trying to maintain the dignity of a Boston Brahmin while staring at a bubbling pile of breakfast cereal.

I looked up at Alan Alda, expecting him to keep the scene going, but Alan’s eyes were already crinkling at the corners.

He looked at the bowl, then looked at me, and then he made the mistake of looking at Mike Farrell.

The silence lasted for maybe three seconds before the entire room just disintegrated.

Alan started making this high-pitched wheezing sound that he always made when he was really losing it, and Mike just doubled over, leaning his forehead against the surgical light.

I tried to stay in character for another moment, I really did, but then another bubble popped with an even louder squelch.

I threw my hands up and shouted, “The patient is talking back to me!”

That was the end of any productive work for at least twenty minutes.

The director, Burt Metcalfe, was shouting through the speaker for us to get it together because we were behind schedule, but every time he spoke, his voice sounded like he was laughing too.

The crew was worse; the camera operator was literally shaking the camera because he was laughing so hard at the absurdity of the situation.

We had to bring in the prop master to “reset the guts,” which only made it funnier because he had to come in with a spoon and stir the oatmeal to get the air out.

Watching a grown man in a professional studio environment stirring a bowl of red porridge inside a prosthetic torso is something you don’t forget.

Every time we tried to restart the take, I would get to the word “precision,” and someone in the back would make a faint popping sound with their mouth.

That would trigger another five minutes of collective hysteria.

There is a specific kind of madness that sets in on a television set when you’ve been working fourteen-hour days for years on end.

We called it the MAS*H fever, where the smallest, stupidest thing becomes the funniest event in human history.

That day, the fermented oatmeal was our king.

We eventually finished the scene, but I don’t think I ever looked at a bowl of breakfast the same way again.

It was one of those moments that reminded us that no matter how serious the show was, we were still just a group of people playing dress-up in a very hot room.

That camaraderie was what kept us sane through the long seasons.

I think the audience sensed that we truly loved being in each other’s company, even when we were covered in red oatmeal and smelling like a brewery.

It’s the moments where the professional mask slips that stay with you the longest when you look back.

I still have that photo, and every time I see Charles looking so stern, I can still hear that oatmeal bubbling.

It’s a wonderful thing to have spent so many years laughing with people you respect.

What is your favorite behind-the-scenes memory from a show you love?