When a dude purposefully or accidentally stabs you with an erect penis through his pants. This usually occurs in crowded areas where people have to brush up against one another. Or inadvertently when giving someone a gives a prolonged bear hug or when spooning.
I can't bend over to tie my shoes in this crowded bar because I ll get will cockdaggered whether I like it or not from behind.

I can never spoon with my girl anymore when we sleep together because she wakes up cockdaggered in the middle of the night.
by The meerlion February 17, 2011
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