Just launched! Learn slang while watching funny vids: urbandictionary.tv
1. frienemies
a blurred friendship; a friend and a rival or enemy.
My classmates made me look bad - they are being such frienemies to me today.
2. frienemies
fake friends you have for selfish purposes

friends you know don't really like you and you don't like them either

friends you get that were once enemies because you're planning on stabbing them in the back
"Keep your friends close but your frienemies closer haha"

"Don't invite Sarah...she's only a frienemy."