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Short for, "lasting boner syndrome". This is when, after sex, the male's erection persists for a longer period of time than expected (>5 minuets).
Man: "Baby, I've got LBS."
Woman: "I know! You finished 16 minuets ago and you're STILL hard!"
LBS by Ilikechicken37 August 24, 2016
Short for "long black sausage" also known as a long black penis.
"Jakob has such an lbs, man."
"Yeh, true."
lbs by Johnson Kato June 16, 2016
A term for pounds.
She weighed around 85lbs when she stepped on the scale.
lbs by David!!!??? June 26, 2009
LBS or Little Bitch Syndrome, is a derogatory term given to those who bitch out of physical activity in any way. Usually used in endurance type sports such as rowing to make people push themselves harder.
"Why weren't you at running this morning?"

"My oblique was soar and the physio said I shouldn't run."

"LBS mate!"
LBS by Mohammed Velouski June 24, 2009
The LBS screwed my order for a new Mavic 521 rim, again.
LBS by Matthew Paterson March 4, 2004
Me: Knock Knock
Your Mom: who's there
Me: Boo
Your Mom: Boo who
Me: Why are you crying.
Your mom: LBS
lbs by Kingformerlyknownaskhari February 25, 2010