Quote Originally Posted by Pravit
It pisses her off, in other words.

There are other expressions using "tits"(most of them British, I've noted).

"better than a kick in the tits" - really good
"things have gone tits-up" - things have gone to sh*t

There are probably some others I've forgotten.
Hmz, the only other one I can think of is "it pisses the tits off me", which is up there in quality imagery =)