the act of making direct eye contact with someone, then looking at that person's dick while they watch you, then again, making eye contact with that person, usually while giving a look of satisfaction. this is usually performed to establish dominance or making that person feel as uncomfortable as possible.
"how was your night, sweetie?"
"swell. I looked at this dude, then at his dick, and smiled at him"
"sounds like our grandson is quite the pro at creepy copping! aww! *pinches cheeks*
Any incredibly creepy fat girl who covers her lame ass Myspace page with many pictures of random "friends" to give the illusion that she is popular and tries to make herself seem desirable by texting everyone that she is at a party, when she is actually sitting on the computer adding strangers to build up her friend's list.
She also constantly stalks the boy she likes, even though he has a pretty girlfriend, (who will probably threaten to beat her ass in the future if she does not stop.)
The sexual act or sexual intentions of one person that is deemed to be inappropriate by the greater community (thus making the sexual behavior that is to be deemed as "creepy").
Eg. Bryan has a dirty mind, so people could even say that he is creepy-sexual.