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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