The proceedings or events of a social gathering especially for pleasure or amusement in which idealized examples of the female gender is strongly represented.
"My sister's 21st birthday party is this Saturday. Her whole sorority will be there! You coming?"

"No. I have to have dinner with my family."

"You'd rather have dinner with your family than partake in the breastivities?"
by Jocelyn_pinkpassport January 16, 2009
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The Breastival is the never-ending show of awesome titties and juggies and breasties all over the world.
More and younger girls join the Breastival every day, and it is a GOOD thing.
by Jacques Asse June 11, 2009
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Any recreational or public event or location which possesses a high likelihood of featuring multiple young women prominently displaying their chests.

Often used as an outdoor version of breastivities.
Guy 1: Dude, you going to the class picnic this summer?
Guy 2: Dunno...is it worth it?
Guy 1: Are you kidding? Last year the thing was a total breastival!

College Guy: Hey, it's sunny - let's get out of the dorms and walk around the quad, it's sure to be one heck of a breastival out there today.
by Peter Lorre January 12, 2010
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