Géderbrunch Munchi is a slang word in Quebecmeaning that someone's brain is melting because he's such a dumbass. It could also be referring to someone who sweats a lot
"Géderbrunch Munchi a dont bien chaud man"
"Le petit Geder va tu venir?"
Trunch is British slang for prick it derives from truncheon (well what do yu think it looks like when it’s angry) and munch the trunch is what a bird does when she goes down on you to give you a blowjob. Incidentally it’s not all good news, Madonna has threatened to perform this act on anyone who votes for Hilary Clinton; I think I’d sooner have good news.
I’m emigrating! Madonna’s threatened to go down on me and munch the trunch!
American: Hey bro, want some chips?
British: So you call these things "chips" instead of crispity crunchy munchie crackerjack snacker nibbler snap crack n pop westpoolchestershireshire queen's jovely jubily delights? Thats rather bit cringe, innit bruv