What's the weirdest thing you've eaten?

I've tried:

Uni (Sea Urchin)

Stomago (Cow Stomach - it's good grilled with the Peruvian sauces they served with it)

Tripa (Tripe - it's nasty)

Lengua (Cow Tongue)

Corazon (Cow Heart - tastes like dried out pot roast)

Nopales (Cactus. They sell jars of pickled cactus in the Mexican aisle, but to get fresh, you have to go to the Mexican store and then scrape the spines off and grill them. They're good for lowering cholesterol and have like 0 calories).

And Pickled Pig's Ear. It's gross. Don't do it.

Jay's sister said something about making me try pork blood.. I shot that idea down really quickly.