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A person who often gets blow-jobs on the toilet
Dane Derouin (Famous Hate Model) is a blumpster
Blumpster by 9289515257 May 16, 2011

Bumpstocking 

When a group of friends go out to shoot up cans, boxes, old tv's and such as a form of entertainment by using a bump stock on your gun or by simply putting your thumb in your jeans change pocket and your pointer finger on the trigger. When you pull forward on your gun it causes it to shoot rapid fire. Clearly a waste of ammo but a bunch of fun.
Me and the boys went Bumpstocking by the old Mitchell place last night and lit up Cooter's old Dodge.
Bumpstocking by Simphead November 23, 2020
John took a poo while receiving fellatio in the dumpster, hence a blumpster
blumpster by Grady the gangsta November 15, 2005

bumpstick 

A camshaft; the part of a typical engine that is timed with the crankshaft to actuate the valves.
Karl has a serious bumpstick in that thing, listen to the lope!
bumpstick by ghost August 1, 2003
A person that you are not sure is homeless or a hipster.
"Wait, is that guy homeless or a hipster?"

"Neither, he's a bumpster."
Bumpster by Smorpheus July 13, 2012

Blumpsterbation

Blumpsterbation is to masturbate while taking a dump, derived from the term Blumpster.
Man, the other day I was doing some blumpsterbation but the smell got so bad I couldn't even finish.
Blumpsterbation by Khaytsus January 29, 2008