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an emission of heavenly gas (deadly to those on the receiving end of it) which leaves a searing mark on the ground of wence the giver sat.
"I did a bottomburp!"

"You did a bottomburp!"

"We did a bottomburp!"
by Bastardized Bottomburp March 17, 2003
Emission of noxious gasses from the anus, most common on the morning after a lager and curry fest
Nigel was so nervous he bottom burped throughout his first date.
by Wolly November 01, 2002
A posh way to describe a Fart.
Oh dear, i seem to have released a Bottom Burp
by Badgertron March 07, 2011
a fart u dumbasses its pretty obvious
ill bottom burp u to mars
by zara bee March 03, 2003