Faccident - A fart that sneaks out when you least expect it, like during

A fart that sneaks out when you least expect it, like during a big moment or when you're trying to look cool

I let one rip during my speech. The whole room froze. I looked like a fool.

While I was giving a presentation, my faccident went off like a firework. No one was ready.

I had a faccident right in the middle of a funny joke. It ruined everything.