Several.
-When we were very young and my father had just begun attending meetings (he went before mom did), he would usually bring one or two of us with him. During the talk, my younger brother had to go to the bathroom, so my dad walked him back. Dad was very interested in hearing the talk, so he stood outside of the bathroom with his foot holding the door open, that way he could hear my brother when he was finished. Problem was, my dad is deaf in one ear. So, while he was concentrating on the talk, he didn't hear what the rest of the congregation heard. "Dad, I'm finished. Come wipe me." "DAD! I'm do-one! Come wipe my butt!"
-Candace letting out a huge fart during the closing prayer.
-ME letting out a rather loud fart on a wooden chair in the middle of a living room where my dad was conducting the Congregation Book Study. I was so embarrassed. An older brother was staring daggers at me from across the room while my two younger brothers were attempting to hold in their laughter. My dad was torn between laughing, correcting my brothers, and trying to keep a straight face in front of the group.
-A future Gilead graduate from my hall using an illustration about popcorn to describe the remnant of the 144,000. He said (among other things) "Jehovah likes popcorn. Has his own special brand. Called the 'King-Priest Brand popcorn'." And the ones who were still remaining on Earth "just haven't popped yet." I had to go to the back of the hall in one of the auxiliary rooms because I was literally on the floor with tears coming out of my eyes. My belly hurt from laughing so hard.
-A brother commenting during the WT study about "dungy idols" used a quick succession of two illustrations to show how disgusting they were. He had us imagine walking barefoot through the yard and stepping in dog shit, and it squishing through our toes. As bad as that was....he went further. He said it was like when your fingers push through the paper....
I have many more. Forty years of attending meetings will collect a lot of events.