An abnormally large and obese male preteen with a small penis. Generally a stømáche is agressive and is on the bottom

An idiot who can't spell "stomach".

Similar to a happy trail except grows sideways and resides an inch or so above the belly button. Picture the belly button being the mouth.

Upset stomach, contracted form of "stomach ache"

A condition certainly having nothing to do with an aforementioned idiot who can't spell "stomach." Those of us who have the ability to read might note that said idiot used the correct spelling of "stomach" in the definition... bitchcunt :)