A threat that challenges an individual to eat one's excrement. It originates from the fact that
poo is disgusting (unless served with a side
salad in a pita bread) and therefore eating it would be disgusting. This means that the challenge will most probably be failed, therefore making the non-poo eater a
failure.
"Yo smelly smell smell head, eat my
poo"
Person 1: I am going to eat your nan
Person 2: Yeah right, eat my
poo!
Person 1: No
Person 2: Haha, you did not rise to my challenge henceforth making you a failure and a smaller man than I. Hell I bet your
penis doesn't even reach the end of your scrotty bag