A guy who prefers screwing fat chicks, simple as that. Ahab is a reference to the captain of the ship that was chasing the giant white whale in Moby Dick.
That chick was so huge she had her own gravitational force and that guy that left with her had to be an ahab
by Brian H October 26, 2005
Ahab...based on an ancient King of Israel who pissed God off seriously (1 Kings 16:30). Ahab - an asshole or very stupid person.
Rush Limbaugh is a fat-assed Ahab.
A refrence made about a overweight girl. But not as big as a beeps. When one has been deemed an ahab, generally the phrase "Grab yon spear" is shouted to tell inform those around of the ahab's presence.
Arrrgh. Ahab off the port bow. Grab yon spear.
by yourmom April 14, 2004
The act of hunting a 'whale' of a girl and taking her to bed.
After Marc was done ahabing her, he walked out of the bedroom and declared "Call me Ishmael."
by Kage October 8, 2007
While fucking your girl doggie style, you suddenly pull out for no apparent reason. When she turns around for an explanation, she notices you've jumped off the bed onto a skateboard, holding the mighty dildo-harpoon in hand, cocked and ready to spear her in the ass. You pursue her as she runs out of the house and down the street while yelling, "You're not getting away from me this time, White Whale!"
The above definition is an example
by MC Menses December 3, 2004
An adjective used to describe a state of rage or chaos.
Ima go all ahab up in this bitch

No man you tell him, he'll go fucking ahab on me if I do.
by super troooper February 16, 2009
Someone who owns the Homeworld 1 and Diablo 2 communities like no other game known. He is mean, rude, and basically Satan. Watch for his evilness, as he will crush your pathetic cry baby souls.
Ahab has yet again ate the soul of an unsuspecting cry baby carebear.
by Jesus November 19, 2003