A used Tampon.
So here I am, having bought here drinks all night. We gets back to my place and I find out she's got a 'Dead Rat' inside her.
by Valetudo March 26, 2004

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Top Definition
The act of pressing one's penis against a window. The slightly flattened penis gives those on the other side of the window a visual of a "dead rat". This act is particularly entertaining while walking by a bar with floor to ceiling windows on a busy weekend evening.
Man was he hammered! I can't believe he dropped a dead rat on that bar!
by The Donkey Puncher November 06, 2006

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This can be used as an expression; it can have both a positive and negative connotation. It is a universal term that can be applied to anything you would like
"Hella deadrat"- something that is really great
"I feel like I'm eating a deadrat"- I feel really sick
"You look like a deadrat"- you look really bad
"You smell like a deadrat"- you smell really bad
"That's so deadrat"- that is so cool
by Roosty October 23, 2006

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This can be used as an expression; it can have both a positive and negative connotation. It is a universal term that can be applied to anything you would like
"Hella deadrat"- something that is really great
"I feel like I'm eating a deadrat"- I feel really sick
"You look like a deadrat"- you look really bad
"You smell like a deadrat"- you smell really bad
"That's so deadrat"- that is so cool
by Roosty October 06, 2006

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when a male sticks his penis in between his legs and bends over to show the "rat" in his ass. a backwards mangina.
"Hey! Luke just showed Luke G the dead rat."
by Zach February 21, 2005

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Somebody who do anything the day, everyday. antisocial but friendly. Deadrat is not an insult.
to be bored to death like a dead rat.
by deadrat February 05, 2007

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