When in a public or non-intimate setting a female's breast accidentally becomes exposed.
We were getting some pizza after the club and as we were leaving the shop we saw some surprise titties.
by zoombie14 July 23, 2009
1 more definition
When a woman's breast look small when she is wearing clothing; however, when she removes her shirt they are surprisingly large.
I thought Sarah had small boobs..but dude, she has surprise titties.
by smoothpuma March 17, 2010