What is Nimcock?
1.
To sleep with your girlfriend when your parents and sibilings have left for the day and your relationship is obnoxious to everyone else. Used in reference to others, never in the 1st person.
After we leave your house in Urbana, your brother is probably going to start nimcocking again.
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1.
(V) To leave the group unexplicitly and without notification to other members of the group. Usually occurring at night and or while int..