(Noun) A person, usually female, with and exremly large butt.

(noun A person with a large good looking butt.
That girl has a J Lo booty.
by X-L February 23, 2005
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The act of wearing tight pants to make your butt look bigger.
Don: Are your pants painted on or something!?
Liza: No why do you ask!
Don: Looks like you're tryna get that J-Lo Effect gurrrll...
by Rei[: July 21, 2009
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A bodybuilder with an extraordinarily big butt
Look how much he's squatting, he's such a j lo Allan
by spockers April 4, 2011
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Like Cool Story Bro A saying that can be used for just about anything like for answering questions, using as a comeback, and you can say it when you really don't care what the other person is saying.(:
Alex: You best get out my house, boy!
Kimi: K J Lo.

Sina: I was hoping to see you preform, I wish you were still part of that dance group.
Vin: K J Lo.
by KimiCastronovo August 1, 2011
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Running your sweaty, hairy, dirty smelly ass crack the length of some unsuspected individuals face. Leaving them with stink face.
"yo the other night Joey passed out, so I gave him a nasty "Dirty J LO"
by tmizzie September 11, 2008
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when someone looks younger for their age.
(jennifer lopez is 50, and she looks like she is 30)
person 1: yo, she is really 25? she looks younger!

Person #2: yeah! she looks 16, that's crazy...

Person #1: that's the j. lo effect. she is blessed to have that.

Person #2: I want to look 20 at 30, dawg.
by memelordboi69 March 6, 2020
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