Usually male, who dresses causal or ofter in grime covered clothes, causing involuntary shudders from unsuspected female victims originated from an eerie star or disturbing comment in an attempt to entice her to pursue romantic endeavors. Natural repellent to procreating.
"I was sitting at the park eating lunch and this creepasauras walked over, sat beside me, and and said 'You'r hott'..... i threw-up in my mouth"
Creep-a-sauras - slime-ball type of man that gives you the willies when he walks by.
Damn, that man is a total creepasauras!