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.

by shanaynay lachild August 26, 2007
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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'..."
by Robanero September 21, 2010
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A rathead is a person whose mental capacity is severely restricted by their big headedness and arrogance. They tend to exhibit idiotic, stupid behavior.
Luke, just because you got a new pair of shoes doesn't mean you have to be such a rathead.
by Lemonade141 August 8, 2019
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An ugly guy who used to be cute but then gets a disgusting rat haircut that gives him a glow-down
Dang what a gross rathead
by Ratheadbully February 3, 2019
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