A lobster is someone who habitually pinches bags before he sells them.
Guy 1: Yo, lets call Shakeem up if Lil Herb doesn't come through.
Guy 2: Nah man, he's a lobster.
Guy 1: Lobster? What?
Guy 2: Yeah man hes scummy enough to pinch a nick.
The act of grasping a girls ass and pussy at the same time. Your thumb is on her ass and the remaining fingers are on her pussy.
I met this girl at a club and when she turned to get a drink I gave her the Lobster Claw. Instead of getting a drink, she pulled me into the bathroom where I not only Lobster Clawed her somemore, but did it with her pants off.