:'3 Share definition Flag Usually used by cunty cunts that are easily butthurt. Can be used for anything, especially at the end of sarcastic comments. "u r a cunt and i luv u :'3" "sorry u got banned! :'3 bye bye!" :'3 by slutapuss January 24, 2009 0 0 Get merch Get the :'3 mug. Buy Now — $32.95 See more merch