stands for Peanut butter and Jelly. It's a type of sandwich. And it's delicious. Not everything is about blow jobs, urbandictionary-ers.
Bob: "OMG R U GONNA BLOW ME!!!!!!111!1
Jane: "No. The food...dammit, Bob."
When it is that time of the month for your wife or girlfriend and you at least get a blow job.
Jason: Well, did you at least get a PBJ?
Kirk: Yea, of course. Guess that was better than nothing!
His sister is a PBJ
6/10, Definitely a PBJ