A big strip of fat across one's face
"Omg that part of your face is fat! You have a serious lack"
by Sexee May 31, 2015
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A small amount. Or someone being tight, stingy or cheap.

(Heard in south east London)
"He gave me lack"

"Quit giving me lack"
by Chris Hab February 28, 2008
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Extreme lack of fun usually referring to History Teachers
Carl: Yo what are we doing today

Ryan: Taking notes

Carl: Your defiantly lacking OF

Ryan: Yeah well The Bears are the best team in the NFL.

Carl: Cutler is a JOKE!!!

Ryan: He's the toughest QB In the League.
by Tinactin October 14, 2010
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This chocolate lacks sugar; it isn't sweet!
by Jon Davis January 14, 2004
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hey dude greg... you should get a penis pump cuz bro your lacking.
by CKarn February 21, 2007
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Your boo, your girlfriend/boyfriend. Derived from the tagalog word for flower (bulaklak) it is used as a term of endearment but also can be used in lewd terms.
"The boo lack lack has me on lock down, I can't go to the strip club."

In lewd terms:
"Ay gurl, let me get all up that Boo lack lack."

"So I walk into the restroom and I hear these 2 people boo lack lackin in the stall."
by cjaysez March 3, 2011
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