STF or (Self Trap Fap) is when regular porn no longer turns you on and you turn yourself into a trap to take photos off and then later use as fap (masturbation) material
by damnitsteven April 6, 2019
by big guyver March 29, 2019
When you're taking a dump and your butt flexes forcing the poop to retract into your butthole causing the sensation of sandpaper going up your butt.
by Matt Stazjic February 5, 2016