bumach 

What happens when an obese person's stomach has shrunk and expanded enough times that two crescents of flabby flesh hang down, creating the illusion that they have a pair of buttocks up front.

That is a tremendous bumach.

bumach by Wylie June 24, 2003

bumach 

The merging of boobs and stomach on the exeptionally obese

OMG look at the bumach on that

bumach by Gavindasagoo June 5, 2010

Bumchunder 

A slang term for diarrohea, derived from the word "chunder" meaning to vomit.

"Why did you bumchunder in my room!"

"That food made me bumchunder"

Bumchunder by MOLOTOV1010 September 2, 2009

Bumcheek Wobbler 

A vigorous fart that makes your buttocks shake. A bumcheek wobbler is usually not very smelly and provides great relief to the farting person.

J- Did you fart again?
P- No, that whas just a Bumcheek Wobbler.

Bumcheek Wobbler by Baron Munchausen May 17, 2006

bumchat 

the act of talking rubbish; same meaning as 'chatting bollocks'

God, John, enough of the bumchat! You've been bumchatting for half an hour already!

bumchat by king of bumchat March 4, 2004

Bumchicker 

A word to describe when someone is being a party pooper, a downer, or joy kill.

It was clear to me as Jacob moped into the door, that he was being a bumchicker, as he through a pitty party about having to go to work.

Bumchicker by Snopea November 20, 2019

Bumchunder 

A Bumchunder is any anal excretion that looks remarkably like a type of food. Usually peanuts, sweetcorn, carrots etc

However depite the aforementioned bumchunder looking like food, it is inadvisable to consume bumchunder, as this action may result in "Mouthpoo", or actual chunder if you prefer.

It looked like sweetcorn glued together with chocolate, it was a total bumchunder!!

Bumchunder by Pedro Mendez November 9, 2010