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noun: an event invloving two (only two) friends who sleep over at either friend's house. verb: the act of two friends sleeping over. A slumberover is restricted to 2 people. This is not to be confused with a "slumberparty" which involves 3 people or more. Also slumberover is not to be confused with a sleepover. Sleepovers are not associated with fun. For instance, a person might sleepover alone at a hotel. That's no fun.
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