Top Definition
A Rathead is cross between a hoodrat and a chicken head. A nasty girl from the hood that been on every cock on the block, but think she all that, has nasty, stinky unwashed hair, bad ratty weave, died red hair, thinks getting dressed up is wearing flip flops and panties. Is always yelling at Sprint to turn her phone back on "da chex in da mail mudafuka! do you know who I IS?!?"

usually likes to bob up and down on someone else's man's dick as much as she can. will suck the last drop of beer from a can and then use it as a homemade pipe for weed or crack.
I keep crank calling that RATHEAD Alkeesha, who started trying to get wit my man and she tried to get ill wit me like she wasn't suckin his dick even though i saw her half red dukie braids riding his junk.

โดย shanaynay lachild 25 สิงหาคม 2007
Someone who snitches to the cops about illegal activity. Usually mob related.
That guy's a fucking Rat Head, he told the cops about Johnny selling weed.

He's a rat, the whole family are a bunch of Rat Heads.
โดย CakalakaJoe 10 ตุลาคม 2006
A subspecies of turtlehead that occurs when the sphincter has been successfully employed for a time in confining a turd to the rectum. As control is gradually lost, a tiny aperture appears at first, allowing for only a very thin extrusion of feces. As the butt-muscle fails in the continued absence of a toilet, the aperture quickly grows in circumference over the next inch or two of escaping dookie, creating a rough cone-shape, resembling the head of a rat more than a turtle.
Jim: "Next rest area 67 miles dude, how's yer ass holdin' out?"

John: "I was doin' good for a while man, but now I got a serious rathead pokin'..."
โดย Robanero 20 กันยายน 2010

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