When you sneak up behind your friend and put your hand in their pocket and grab their junk.
Dom threw Jake a nasty Back Door Slider last night.
by The Gosh Dang Bruin April 20, 2021
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When a lesbian gives a male a blowjob
Mate you hear about Harry the other day, he went out and managed to get a Butch Back n Sides from Cassandra's girlfriend
by The Walking Lisp July 20, 2018
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Something composed or performed quickly and without detailed analysis or research.

Made popular in Danish commodity trading companies by Peter Fedders.
Just a quick back of the fanny pack calculation shows that we are in the money
by majonese December 19, 2019
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An archaic form of "be back later" that only people under a rock use. Anyone that uses this is most likely not human. Do not engage.
by alecbtw July 4, 2021
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