A person with a penis. Commonly used to refer to a woman who turns out to be a man. Also could refer to having a large penis.
by live nude girls March 18, 2010

term used to describe the penis when an individual engages in anal sex to influence the outcome of a situation.
by Bushguy July 29, 2009

the act of one man penetrating another man, missionary style, while holding tightly to the receiving man's erect penis, attempting to "lift the hammer"
Nothing better than working up a good sweat in Gold's Gym, showering off and then Thor's Hammering your spotter...
by Bennjammin July 27, 2018

When an industrial facility that consumes a copious volume of water suddenly stops drawing water from a water treatment plant via a pneumatic switch or quick-close valve. The instantaneous closing of the valve causes a backup of water pressure that breaks water treatment plant pumps and pipes.
The water treatment plant's pumps were destroyed when a chicken plant slammed their valve closed after a washdown of the facility causing a water hammer
by Un-Civil Engineer December 23, 2011

The act of stomping on ones body repeatedly in a fight, using the heel of one foot as a weapon of mass destruction.
by teeskees July 29, 2012

Describing when someone is about to do something gnarly, a great feat. usually relating to skateboarding, or other extreme sports manuevers. see also hammers
by shawn March 9, 2004

"Could you please warn me whilst viewing your vacation pictures?! I'd rather not not come across another close-up of your husband's BABY HAMMER!!!"
by DJ Scratch-N-Sniff March 1, 2012
