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1.
1. The person you bring with you to a travel/destination wedding that, while not necessarily dating them, will ensure that you will be guaranteed to get some at the conclusion of the night. Also, highly desirable in that said person helps you avoid sitting at the "singles table".
Carl: I can't believe I've got another wedding to go to.

Steve: Don't sweat it man. Bring a slut-1 and you'll be all set.

Carl: Great idea!
by Queso Bandito October 24, 2010
 
2.
The primary slut in your group of friends.
Slut1 goes around with everyone we chill with!
by WiiFii September 05, 2008