1. A man who does not need to bend over to suck dick.
2. A gay midget
"that fucking grundle runt ran between my legs"
grundle runt
by Rhodotracker November 29, 2014
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Short guys or girls who hang together, thereby making themselves feel collectively bigger and more powerful. Runt posses can make normal-sized people feel freakishly tall.

Warning: Male runt posses can turn into the most obnoxious guys in the room.
Liz: "Look, Jan and Katie just got here? Let's go say hi!"

Gwen: "Naw, girl, they're with Squeaky and Lil' Jeanie. I'll look like Andre the Giant next to them. Total runt posse."

Pat: "Man, did you see that little dude over there just get in my face because I accidentally grazed his left elbow?!"

Pete: "Bro, that's just Timmy Smalls feelin' like a bamf cause he's hanging with his Runt Posse. I'd stay away from him though."
by Hookermom October 06, 2009
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A classical animated British comedy. Rex the Runt - "The Wobbly Bobbly, Wibbly Squibbly Dog" by Richard Golezsowski
by Kane April 07, 2005
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(Noun)Used mostly as a derogatory slur for a man with small penis. Often used for the smallest "member" in a locker room or boot camp shower.
"There goes Pvt. Runt Dick!"

"Steve is the teams runt dick freshman this year."
by Nubb'n December 05, 2008
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A runt that is as dangerous as it is violent. Typically can be spotted by the short stature and scars above their eyes. Nickname mostly given to white men with little man syndrome, but whose actually backed it up. (Negro's please see Monkey Runt). Most Runt Bears also have a calm and friendly side that can be changed at the flip of a dime. Women are typically alarmed the first time they sleep with a Runt Bear, due to the size of their extremely large member. Warning, do not fuck with a Runt Bear.
Slut A: "What a little fucking Runt Bear"

Slut B: "True, but I heard he has a 9" member and is a member of the League of Extraordinary Genitals"

Male friend: "You bitches are sluts"
by Your Stepdad December 02, 2011
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A Reality to the Cu*t slap
She is so hot on herself but not and such a b*tch, she really needs a Runt Slap!
by =\m/-_-\m/= January 31, 2011
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