When my ex was about 4-5 months pregnant with our first child, we went for a walk through some woods near our house and came upon a small tree covered with small, hard, green fruit. She asked me what they were and I told her they were persimmons. She asked if you could eat them and I explained that they were wonderful when they got ripe in November, but it was July and they were a long way from being edible yet (a green persimmon is incredibly bitter and nasty-tasting - like ground pecan hulls soaked in diesel fuel).
So she picks one anyway and starts to eat it and we have the following conversation:
"How do you know they aren't ripe?"
"I've eaten them all my life and I know they don't get ripe until November, and when they do they get soft & turn orange. It's July and they're hard & green."
"You think you know everything."
"I know it's July, those persimmons aren't ripe, and you're gonna be sorry if you eat one."
"You don't know everything!"
"Don't do that!"
CHOMP
She immediately began retching, spitting, and clawing at her mouth trying to get it all out. Within seconds she was down on her hands & knees throwing up, crying, and gagging like a cat trying to cough up a giant hairball. Part of me felt bad for her, but part of me was laughing and saying "I told you so!" (on the inside of course). After a few minutes when she recovered enough to stand up, she yelled at me, "Why'd you let me do that?" Yeah.