Wiktionary
tits-up
a. 1 (context idiomatic slang usually of a woman usually naked English) Lying down face up. 2 (context idiomatic slang vulgar English) broken; failed; inoperable. 3 (context idiomatic slang vulgar English) Dead.
Usage examples of "tits-up".
His instincts, always superb, told him this was serious trouble, that he was watching an operation go tits-up on a truly grand scale, but he was smiling in spite of that.