It's when chicks do chick stuff like hangin' around the house and talks about sex and the size of the dicks of the guys they had sex with.
Chick number 1: I'm sooo looking forward to our slumberparty this weekend, I wanna do some cocktell
Chick number 2: OMG! yes, I love cocktells. And to give a hint, he has such a small penis. how can he ever satisfy someone with that small thing?
Chick number 1: Stop cocktelling now, cocktells are for this weekend only!