The act of setting on fire one's fart and lighting a fuse on an explosive with said fart.
Billy set off fireworks on the Fourth of July with his explosive bum breathe.
by Wizard Lizard March 28, 2014
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1) A homeless man who rides from town to town on freight trains and fixes computers.

2) Digitally enhanced anatomy, which spends its time trolling the internet and spewing its filth upon unsuspecting websites.
1) I lost everything when my hard drive crashed, but a tech bum showed up in town this week and now I have all my data back!

2) I was proud of the message board I had designed, but within the first five minutes tech bums had covered it with .gifs of dancing offal.
by SoloThinkTank March 29, 2011
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A type of infection that spreads to the thumb,
From running it up someone's ass, or possibly your own, thumb will swell, bum will swell, kid will cry!!!
Man I cant give Brad cant drive anymore, the ball bum thumb got him again!!!
by Uranus stinks February 07, 2019
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The attack of poo on the outskirts of the rectum that is so violent that you can feel the anus veins pulsing faster and faster until the bum blasts out the rumbling poo at the speed of light and the bumhole starts foaming with steam, leaving the pooer wondering whether that they just released a bubbling, mutant fart or a hard, moist poo.
The bum battle
Person 1: I just had the most awesome bum battle ever
Person 2: was it a fart or a poo
Person 1: I still not quite sure. The toilet's in a bit of a mess
by Mr Dixon March 25, 2014
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A British/English term for sweatpants or lounge pants.
Kaelyn: What did you buy at Victoria's secret?
Lucy: A new pair of trackie bums! They're purple and say PINK down the side! Ironic?
by longlivethequeenb September 19, 2013
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Some who is a low life and looks or acts like a bum. You don’t have to be a trash bum to be called one
Ew look the trash bum is here
by Gods twin October 02, 2018
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