7
meaning Persistant Little Bitch.
aka: someone who doesn't give up until their point has been made, or until they get what they want. Usually someone who is very stubborn.
Melissa: (adds an unflattering picture of Rebecca on facebook)
Rebecca: DELETE
Melissa: Nooo! It's so funny!
Rebecca: MELISSA DELETE THIS NOW. Am I going to have to be a PLB on your ass?

"Don't be such a PLB!"
by Savage_Cabbage September 14, 2009
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8
acronym for "Pissy Little Bitch"
usually referring to male with dramatic female tendencies
I seriously cannot handle that PLB whining about the carbonation in his fruity effen cocktail.
by brobi March 17, 2010
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11
1) Perfect Little Being.
2) Used to describe beings that have no flaws and are loved and appreciated by all. Can also be considered angels on earth.

3) Select animals with truly unique personalities achieve this classification. Many pet owners think their pets are PLBs. All PLB pets are also LLRs.
I met the sweetest dog the other day. He cuddled with me while I was crying and stayed there until I felt better. Then he gave me one lick and walked away like the PLB he is.
by trip-daddy June 24, 2019
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12
Street name for a top-of-the-line sports enhancing supplement. Stands for "Pure Laufasa Blood". Said to be a mixture of 50 different kinds of amino acids and a hint of testosterone. Illegal in Iowa, Vermont, the East half of Canada and all of Europe except Amsterdam (cuz, shit, everything's legal in Amsterdam)
I heard we have squats today. Bro, let me get some of that P.L.B. before we lift today.
by Jaisizzle July 13, 2011
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