Not an actor but made an actor lose their s**t giggling. When I was 18, my best friend and I took dates to a haunted house. In one room, there was a mannequin dressed up as an asylum patient laying on a surgical table. Being a teenage moron, I go up to the mannequin and proceed to dry hump it's hand for humorous effect. As I'm humping this hand, I say out loud, "Huh. Weird. This hand is so warm. "

It was a dude. He proceeds to give me a little squeeze and cackles maniacally. I holler, jump a couple feet in the air, and everyone else loses their s**t.

I flee the room, and ole boy is just laying there laughing til he cries saying "it's so warm" and then breaking into more fits of laughter.

It's been 20 years and I still haven't lived it down 😅.