What is Ktfb?
Knee Trembler From Behind
KTFB Figure it out for yourself dimwit
See shag, bone, knee trembler, poke, fuck
kick the fuck back - when someone says something its its unbelievable
BoB: Dude, I totally banged that girl from last night.
Booby: KTFB
See ktfb, lies, lol, booty, no