Not necessarily blue, though can increase sex appeal if so.
Someone who is a visual sensation and 89% of the time, under or around 5ft6.
Examples: She is well smurfy, omg she's smurftastic, let's go smurf hunting, I am the smurf hunter, where there's a smurf there's a way, no smurfs = no party.
"Come on lads, get the nets ready, we're going smurf hunting"
2. As a female walks buy, your walking companion will make a "mmm sound", to confirm their accuracy, "smurfy"