I just had an experience like this the other day. As girls, we always want to be liked, so we'll be as nice as possible. Deep down, we might want to cut a bitch, and sometimes those feelings comes out as "jokes."
"Oh hey, good to see you!" (half hug) "Just kidding, still hate you. Hahaha" (fake smile)
Funny Or Die did an amazing job of capturing the relationship of frenemies. Hahahahaha... you bitch!
WARNING: Explicit Language