UBR Share definition Flag Used Beyond Repair Do you want her back, man? -no because she's ubr. What you would use when a girl sleeps with a lot of guys. And you dont want any of that. When a girl is a slut you say she's UBR... UBR by Noobfess November 22, 2014 0 0 Get merch Get the UBR mug. Buy Now — $32.95 See more merch