Small penis energy and super insecure. Has reall bad dandruff and hes greek. Gets absolutely no play and if you see a kostas you dont want to be around him. Kostas a hoe ass nigga.
Relatively short person with brown-yellow-ish hair and has 3 amazing and funny friends. Very nice, smart, lovely person but which sometimes can be a bitch and a cry-baby. In this occasions you better not piss him/her off. Someone who is a big fan of football, ACMilan and KPB.
1. To hold an alcoholic drink for an inordinate amount of time.
2. To pretend to be drinking hoping no one sees that your alcoholic drink has been at the same level for a minimum of at least 40 minutes.
3. Challenging others to drinking contests in hope that they are too drunk to see you haven't been drinking at all.
Also see "Nursing"
Conner: "Dude, come on chump. Man up and just down that beer already!"
Milo: "Screw you bro! Don't challenge a Beerlympic champion when you've been kostasing your beer all night!"
It means someone who is completely crazy. It's the mixture of two words, kos which means pussy and mashang wich means crazy
Actually kosmashang is some one who are crazier than just being mashang
Kosta is the SEXIEST man on the planet. Pulls chicks left right and centre, a tru playa. pushin P. Will steal ur girl at a party, so be careful. massive dick, would absolute wreck you in the bed. gets 6 chicks in one bed. A heart breaker. so smart and the best at sports.