Bum trumpet 

A fart - but more specifically a particularly loud, long and smelly fart.

Ell: Jeez whats that noise.....oh bloody hell someone open a door what IS that?
Livy: it's just Isa playing the bum trumpet - chill dad!

Bum trumpet by Lazyfatbitch December 30, 2016

bum trumpet 

To fart; release gas; flatulence.

Hi, little bobby, did you just bum trumpet?

bum trumpet by keens February 11, 2004

bum trumpet 

An extremely loud fart made deliberately

Johnny let out a bum trumpet while sitting on the couch with his sister.

bum trumpet by cold_eyes May 31, 2014

Spunky bum trumpet 

To fart bubbles of semen after an act of anal love-making.

My boyfriend blasted me with such a huge load last night I’m still playing the spunky bum trumpet.

Spunky bum trumpet by Harry Sausage January 14, 2005

trumpet bum 

Used to describe someone who farts alot.

Oh, gezzz... you trumpet bum!

trumpet bum by az_oz December 15, 2005

Buttrumpet 

A person or person's ass predisposed to exceedingly loud expulsions of gas from the anal regions. Usually refers to a temporary condition of said effects.
See also 'magical buttrumpet'.

'Man, I got mad buttrumpet today, must be the beans'
'You've allways got buttrumpet stinkhead!'

Buttrumpet by Unkle Funk April 14, 2008

Magical buttrumpet 

A person or person's arse with the ability to fart loudly or buttrumpet at will as if by magic. A finely honed skill of sucking air into the arse to trumpet out.

'Woah, Barry's got a magical buttrumpet!'
'Yea it's incredible'

Magical buttrumpet by Unkle Funk April 14, 2008