1. Could mean. seriously fuck it.
2. A form of exasperation
3. Used when in deep shit
4. Used when you are about to kill your hockey team mates.
1. Sierra: oh yeah fuck it! That is so hot. more!
2. Shit we missed the turn! Fuck it I'm not turning around.
3. Oh fuck it! *looks around but is backed into the corner with no escape*.
4. *gets slammed into the boards* "Fuck it your dead!" *chases her team mate and slams him into the boards*