look up any word, like sounding:
 
1.
To insert one's entire hand, (usually clenched), into one's rectal passage. Repetitive motion is then applied followed by a dose of Carex.
I was bored at work, sat on my hand and by accidet it slipped up my backside. Therefore i was self fisting, accidently mind you!!!
by SpaccaDayNightFever July 26, 2003