P&BJ Sandwich Share definition Flag v. The act of giving a blowjob while simultaneously making a peanut butter and jelly sandwich. "Woah, she totally gave me a P&BJ Sandwich last night!""No way, dude. I don't believe you." P&BJ Sandwich by quiliff December 11, 2016 0 0 Get merch Get the P&BJ Sandwich mug. Buy Now β $32.95 See more merch