When you are mid-coitus and your roommate enters your dorm room. You proceed to jump off your bunk and into a snuggie (preferably mid-air) to tell them to come back later and/or warn them of the horrors going on in the room.
I had to come back to the party because Jennifer snuggie ninjaed me when i got back home. She literally jumped off the bed, tore her snuggie from a hook and jumped right into it before i got 2 steps inside.
by lars one October 04, 2010
3 Words related to Snuggie Ninja

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