An abandoned beer in a party or bar setting, particularly one which remains after the evening's festivities are over and is consumed by someone of lesser standards and/or means.

Usage apparently limited to a small circle of friends in the UMass Amherst area, late '80's through early '90's.
I was so trashed last night I was going around drinking slopers, even ones with cigarette butts in them.
by wette van otterpocket September 18, 2015
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A women who has a new scooter and wants to be an eshay but in fact she cant spell. But Miss sloper r u wanting to be an eshay. SAVAGE SLOPER IS COMING FOR U
by YEh Bah September 25, 2020
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Using any unusual substances to replace lotion for masturbating.
Ex. Chocolate Syrup, Ranch Dressing, Contact Solution, Glue, etc.
Person 1: "I beat my dick so hard last night."
Person 2: "Did you use lube?"
Person 1: "Kind of, it was a Pop Sloper."
Person 2: "Oh, okay."
by Kebi69 April 16, 2017
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Person that does insane amount of coke
Hey bro you tryna hit the slopes?

Nah what do I look like a sloper
by Negrito Stenson December 8, 2020
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Making a dildo out of wet clay and useing it to pleasure yourself while the dildo is still on the clay wheel
Took my wife to a couples pottery class and was shocked when the instructor went to town with her Pueblo sloper
by The bread king November 23, 2018
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