The act of defication while riding a bicycle. Primarily used to provide extra cushioning and support between the saddle of the bicycle and the posterior of the cyclist.
1. Lance shattled himself during the race in an effort to provide the support he lost to his missing testicle.
2. I heard John shattle in an effort to relieve his aching ass.
2. I heard John shattle in an effort to relieve his aching ass.
by fotofotof June 23, 2015
Holding your penis as tightly as possible until it turns completely red and flailing it in circles like a peniscopter.
by fotofotof July 20, 2016