The dirty fingernails method is when you are jerking off and you stick your finger up your butt and move it around. Said to give you 10x the pleasure when you cum
SpongeBob: hey Patrick last night I did the dirty fingernails method to a picture of sandy
Patrick: ew that's gross! But how did it feel?
Patrick: ew that's gross! But how did it feel?
by _amb.21_ March 28, 2016