A Three Share definition Flag Use this to describe any person who thinks they're a 9 or 10 out of 10 when in actual fact they're a 5 or 6. Dan: "I pulled a worldy last night, absolute stunner". Phil: "stop lying Dan, you're a three". A Three by plasticking59 June 25, 2016 0 0 Get merch Get the A Three mug. Buy Now — $32.95 See more merch