A scale in which a WTF is measured, usuall from 1 (worst) to 10 (best). Mostly used by 1337 uber geeks who play unreal tournament, lolcats and other extreme creatures
Person: " OMG! that scored a 7.6 on the wtfometer!"
Person: "You're so gay you score a 2.3 on the wtfometer! k thx bye!"