Dude 1: Ever heard of fireflanger?
Dude 2: No
Dude 1: Well thats quite unfortunate :(
Dude 2: Ok but have you heard about elvis pressley his stuff kinda awesome
Dude 1: TRUEEEEE
Whilst in the act of coitus, one farts an especially warm and wet fart under the sheets. One then traps your lover under the covers. Said lover may thrash around and yell, but lo, he or she is stuck... in the FIREBLANKET.