Oral sex of the highest caliber; known to make one's knees shake.
"Man, I need some fucking slop"

"Cassie sucked my dick last week.

Did she have that slop?

Yeah, it was some slop."
by marleyrt September 2, 2015
Slop is whatever is leftover or unwanted.
That guy Shawn has got some serious slop in his life.
by CLICKHERE4ANTHRAX February 17, 2010
Cold cottage pie, shepherds pie, casserole etc. Deliberately eaten without warming up.

Often going hand in hand with a foul stench.
"Blimmin 'eck lad, Jamie's eating slop again!'
"Crimes! He smells already"
by Prumps Manjula October 10, 2017
food from mcdonalds, wendys, taco bell, etc.
i'm doing a slop run. you guys want anything?
by dave December 4, 2003
a mashing motion usually occurring between two vaginas most commonly referred to with lesbian sex.
"There's nothing better then two hot, wet, lesbian pussies slopping together"

The two girls slopped all night.
by letsSLOP September 22, 2011
A shot in pool that you didn't mean to make because you were aiming for another ball or another pocket.
Its your turn, that was a slop shot.
by SizMcdiz January 25, 2006
A Stew like food that is cooked with no care or attention.
School dinners.
Dom served up slop at her dinner party.
by The Dux March 26, 2008