look up any word, like sex:
 
1.
Slumbie-Noun

A slumbie is a slang term for a sleep over. When one person sleeps over another's home.
2x Stuf'd and Vanilla Cracka had an amazing slumbie at 2x's house last night
by 2x Stuf'd February 06, 2009
 
2.
Verb: the act of slumber partying.
Sarah! Are we going to slumbie saturday night?
by laadygaaga August 09, 2010