1 definition by 509cougar

a term coined by @509cougar on twitter meaning You're Only Young Once, derived from Drake's YOLO. There are many things you can do in a lifetime, but only some can/should be done during your youth.
Michaela: girl, I'm not partying tonight, I've got too much homework to do.
Tiona: YOYO.

40 year old: Bro, lets go hit up the WSU frats tonight.
25 year old: um, dude, YOYO and ya time is up.
by 509cougar February 10, 2012
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