To use your teeth while giving a blowjob. Mostly girls who are just starting out do this.
Susie can't give blowjobs she keeps using her teeth, and it's painful.
Abbrevation for Turtle Head Popping. Which means when you gotta take a poop and it keeps poking in and out of your asshole cause you gotta go so bad.
Hurry Up And Bring Me Home Johnny, I got a THP, and I'm about to shit myself.