Creepy Internet Stalker 

A furry/anime artist/other talentless, oversensitive type who gets mad at a particular person (usually a female that they have a creepy, backwards crush on) and goes around trying to get even in such ridiculous fashions as writing innacurate, stupid definitions including their real name.

I seem to have a creepy internet stalker on urbandictionary.com

Creepy Internet Stalker by tengu shoes January 7, 2005

Creepy Carl 

When you are engaged in the sex act of "69", at the moment of orgasm, you unleash a turd onto your partner's face.

Jill gave Jack a Creepy Carl because he gave her a mushroom-shaped bruise across her neck the night before.

Creepy Carl by JoeSMDD August 29, 2003

Creepy Lucas 

Someone who is bipolar and stares at girls' boobs all the time. Also thinks he is really cool.

Mary: "Dude, that guy tried to pick up on me earlier, and now he is ignoring me and talking about cat AIDS! And he won't stop staring at my boobs..."

Jenna: "Wow is his name creepy lucas?"

Creepy Lucas by Sabine Dolphine October 25, 2009

creepy pete 

A guy that is prone to rubbing on chicks. This comes and goes.

Was Andrew being a creepy pete?

creepy pete by Kerry February 13, 2004

Creepy old dude 

Young person's term for anyone over 40 attempting to have sex, especially if the young person is jealous of their apparent success.

"Check out that creepy old dude at the bar with the hot Latina chick! WTF? He must be loaded!"

Creepy old dude by HCUser October 28, 2006

creepy treehouse 

A place online that adults build with the intention of luring kids in.

Its totally creepy treehouse that Professor Jones wants me to be his mySpace friend.

creepy treehouse by John Krutsch April 20, 2008

Creepy Guy Formula 

The formula one must use when determining at what age it is socially acceptable for a male to date/marry/etc a female.

Generally stated, the guy's age divided by two, plus seven.

Cale is 26. Cale's age divided by 2 is 13, so adding 7 to that gives you 20. Thus, by the rules stated in the Creepy Guy Formula, the absolute youngest girl Cale can date is a 20 year-old.

Creepy Guy Formula by Vocatus May 25, 2012