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1. creepertastic
(n): a person who exemplifies all the qualities of a creeper fantastically, one who creeps, or is creepy very well.
"Did you see that guy staring at us?"

"Yeah he was creepertastic!"
2. Creepertastic
Unbelievably creepy, make said individual a known creeper, as seen on www.creepertastic.com
Did you see that old guy trying to dance on that high school girl? So creepertasticc
3. creepertastic
something that is fantastically creepy.
your love of horatio is creepertastic.
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