Most fratboys lock themselves in their giant houses and chase one another with their pants off to give each other wicked hammerheads.
by lankysob December 28, 2005

an older woman who preys on young men in their late teens and early twenties.
a woman who robs cradles.
a woman who robs cradles.
by malcom202020 May 21, 2011

A penis with a very large head. Often causes bleeding and/or causing the other person to become awestruck.
'Check out that hammerhead!'
Another word meaning fucked hard.
'Check out that hammerhead!'
Another word meaning fucked hard.
by willie989 January 18, 2010

An aerobatic maneuver in which an aircraft flies straight up in a vertical path until it stalls, at which point it spins around and flies back down the same entry path.
by Skimmer September 17, 2005

God: We need to make something great.
Angel: How about a shark that can beat the shit out of people without biting them, it’s called a hammerhead shark
God: That defeats the purpose of a shark but ok.
Angel: How about a shark that can beat the shit out of people without biting them, it’s called a hammerhead shark
God: That defeats the purpose of a shark but ok.
by SpeedySmith July 26, 2018

the art of bashing the back of a chicks head in when shes going down on you. preferebly until she passes out. then you finish.
"dude, tiffany came over last night and started to give me head when i got an uncontrollable urge to bash her skull in. so i did, and she hasnt woken up yet. i think shes dead."
"i got myself into some hammerheading action the other day and now i can't read anymore."
"i got myself into some hammerheading action the other day and now i can't read anymore."
by jamesisdead September 26, 2007

When a male closes his eyes while undressed and waves their member back and forth, like a hammerhead shark, in an attempt to locate their mate.
Freddy undressed, closed his eyes, and began hammerhead sharking to find Judy through electroreception.
by GZX959 December 29, 2015
