When someone presents you with food or a food like substance that looks or smells gnarly and asks you to eat it. Usually the food is something that is commonly eaten and maybe particular to a certain culture.
Bjørge: Hey, do you want to try some Rakfisk?
Tony: whats that?
Bjørge: Its a fish that has been slowly fermented (rotten). Its our national dish in Norway.
Tony: Thanks, I will pass.
Bjørge: How about some sheep head? Its a traditional dish.
Tony: Dude, Norwegian food is such a food dare!