a slang word used to describe the end result of defecating.

When you go to take a poo and you don't sit far back enough and the poo smooshes into a cake on the seat.

1. Referring to a person as someone who is undermining and unpleasant, most commonly used against young people.

a bumcake is a shit when it is in a pile like a cake or when hairy swetty men called ted, shit in there own babiies nappy to make a big pile of BUMCAKE

when something sucks, or is just pretty bad or lame.

is when a person munches on their fat partner's sweaty hairy arse