Top Definition
Finnish for "grandpa", ukki can be used to describe a creeperish man that definitely should no longer be in college but he chooses to stay so that he may creep on girls and avoid his doom at the nursing home.
Rachael: "Oh my gosh did you see ukki today???"
Jenna: "Oh ya! He was totally creepin, he stopped dying his hair too! It was all grey!"
by yousaywhaaaa November 28, 2011

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