I had sushi once, on a plane. I was flying back to VA from London. They served little sandwiches. I thought they were tomato. After a bite, I thought it tasted fishy, so I opened the sandwich to inspect it. Sushi, tuna I think. I figured, "I swore I'd never eat this stuff, but I've had a bite, and it wasn't bad. May as well finish it."
I was in bed for a week after, suffering from the horrific combination of jet lag and food poisoning.