The act of sitting on someones face butt naked with your ass on there mouth and your nuts being separated by the other persons nose, which resembles sitting on a bicycle seat.
But you must pedal with your feet and hold your arms out as if you are actually riding a bicycle.
Dude the other day i was going in for the t-bag and i slipped and full on bicycle sheeted on there face. my nuts were all like spread eagle.
When you wash your sheets and wait till the very last minute the dryer cycle is done just to be able to get those warm, crispy puppies back on the bed, to have the cosiest sleep you'll have all week.
I could smell the dainty laundry detergent airing off the clean, crisp bed sheets I just washed. My Sundays are shit, but nothing beats my Sunday nights because it's clean sheet night.
Gavin: hey man, wanna go for beers after work?
Mort: nah way man! It's clean sheet night!