Fuck it shit happens drive on rude slang
The abbreviation for this slang is "FISHDO."
Unpleasant things occurred, so stop talking or thinking about them and start doing something new.
A: I'm so frustrated with how things went. B: Oh well, fuck it, shit happens, drive on.
FISHDO, pal. There are plenty of other nice girls you can ask to the prom with you.
This slang has been cited in print since at least 1994, when it was said to be military slang.