The word you single is most often used by 9 year old Roblox players, other wise used in a really weird conversation yo wanna get out of.
9 year old: time to sign into my roblox and get some sweet online babes.
Other roblox player: I'm just minding my own business in his game.
9 year old: hey you single.
other player: yeah, wanna go on a date.
9 year old: SURE :) XD
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Mom: so honey this is how sex works...
Son: you single?
Mom: umm what...