titties is out 

a topless car

Don't say my cars topless, say the titties is out.

titties is out by Anonymous July 14, 2003

Titties Is Out Day 

A day of unseasonably warm weather following a lengthy stretch of cold weather that causes women to overcompensate by wearing unusually revealing or form-fitting clothing, thus accentuating their breasts and allowing men to see them for the first time in weeks or months.

The first warm day of spring at my college campus was the biggest Titties Is Out Day of the year.

Titties Is Out Day by DCDLM July 20, 2008