Go tits up slang rude
The phrase is a play on "go belly up". "Tits up" is sometimes hyphenated.
If something "goes tits up", it comes to a halt and stops operating.
A: "Where is your phone?" B: "I leave it at home. It went tits up last week."
Our relationship might go tits up because we can't be reconciled with each other.
If someone/something "goes tits up", he/she ends in failure or something totally fails.
The business went tits up, therefore, hundreds of employees were out of work.
The plan would have gone tits up if we hadn't cooperated with each other.
The verb "go" should be conjugated according to its tense.
This is a 20th-century phrase, probably of military origin.