Noun. A "grab" is a group of two or more well-dressed white men standing around and looking speculatively at their surroundings. Possibly seeking to invest in the neighborhood for their own purposes. At least one still uses a cell phone holster.
Yo dude, I was flying this plane yesterday until at 30,000 ft, this douchebag pissed all over my Michael Strahan poster, so I had to grab two beers and jump.