A danish slang, that usual refers to a very gay person. It's originated from the Danish version of the "Fantastic Five". Where five gay people help a straight fix up their life.
Target: Oh, does my nipples look to big in this shirt?
Beholder: Oh my god your such a Kasper!
The greatest guy in the world. This guy is normally super hot, smart, athletic, and owns every single human in the world.
The name 'Kasper' or 'Casper' originates from American Pie, as he has sex with the hot girls, and parties hard and all that.
"What do you think of Jessica Alba?"
"DUDE! She's so hot, but only a Kasper could get her .. "
Pulling a Kasper refers to a sort of dance, mid dance floor. You make this dance by sticking out your pelvis and by putting both hands on your hips you try and look as drunk as you can, sometimes even making this manuever with a full cockatil in your one of your hands. Thus trying to attrack members of the opposite sex for a "one night stand". This dance has a high rate of success.
If it gets late enough I might have to just sack up and make a kasper on the dancefloor.
It means to be 'Awesome','Cool', or a 'Legend'.
" Matey, i scored so badly yesterday, it was amazing !! "
"Dude! Your so Kasper!"