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.
by DCDLM February 8, 2007
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On the 10th of every month is reffered to as National Titty Day where you Totty fuck all day or bite, kiss, or suck on a tit all day
Hey dude can you come over

No its national titty day me and my Girlfriend are titty fucking
by Jonny doet November 10, 2015
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On the 11th of October every year you can tell your friends to send you a titty pic since it's the 11th Oct. They have to listen too.
Hey, it's the 11th of October, you know that that means! National Titty Pic Day 11th October.
by notsob27 October 10, 2020
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Oct 19 is national pop a Titty day - it means getting your tits out.
DIDNT you hear? It’s October 19! That’s means it’s pop a titty day!
by Bloke475 October 19, 2022
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