Top Definition
When your powernap turns into sleeping for multiple hours
Abel: Hey dude, want to go to a party with me?
Erlend: Sure just let me take a quick powernap first

4 hours later

Erlend: Dude i overslept
Abel : i know you totaly took a grimm-nap
by Gode_gamle_grimm December 17, 2009
5 Words related to Grimm-nap

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