1 definition by Bessie the BadAss
The latest, hippest word meaning sleepover, for girls over the age of 18 who still want to chill with their friends, eat some ice cream, watch a chick flick, and chat the night away. Slumbos also may feature spontaneous dance parties, prank phone calls, uncontrollable bouts of laughter, and some sort of delicious baked good - consumed in excess, of course.
"Nat and I are having a slumbo after our super delightful night on the town. No boys allowed. At least not until later..."
by Bessie the BadAss September 25, 2014
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