hammerfist

to hit something or someone with a closed fist in an overhand motion intending to cause damage, similar to the way a hammer is swung using the tricep muscle. Usually quick and repetitive.

Brock Lesnar landed some mean hammerfists against Frank Mir.

"Quit being stupid before I knock you down and hammerfist your face!"

by Forrest Griffin January 16, 2010

hammerfist

to plunge a fist repeatedly into a man's or woman's butt or vagina for maaaximum pleasure.

jon is going to hammerfist julie.

jon was excited because he hammerfisted julie last night.

by messseduppp March 07, 2009

hammerfisting

In sex with multiple partner, 'hammerfisting' refers to the act of inserting ones fist into the vaginal- or anal orofice of a sex partner, whilst another sex partner repeatedly pounds the elbow of the inserted arm to create a hammer-effect.

the heat of the moment required hammerfisting to occur

by Mushroom Koen, bassmastah P June 06, 2011