a. a military cautionary statement, when one is firing the AT-4. One looks behind them, scanning for personnel 100 meters back in a 90 degree cone, once it is clear they yell backblast area clear and fire.
b. One looks behind them, and whether it's clear or not, yells BACKBLAST AREA CLEAR, and rips a loud veracious fart.
The Boston Backslap is the sexual act of rooting doggy-style and the male pretends to be edging near to climax, instead shitting into his hand and slapping it on the females back.
Billy: Bro I was fucking that dog of a cunt Deanna, and she was a shit root so I shit in my hand and slapped it on her back.
When you bend your girl over, stick a left over chicken nugget in her bumhole whilst guiding it in with your left thumb, with one leg over in the air as you slap her ass cheeks.
Diana : Hey baby what should we do with the left over nuggets....
Mirko: I think you know ;)
Diana : Ok, I will prepare my ass cheeks
Mirko: Ok honey, I'll meet you in the garden for the MC Chicken Backslapper
Pajama casual is a term used when working from home and preparing for a video conference. All business above the waist and your pajama pants down below.