Top Definition
(verb.) When one's titties pop out of one's shirt, bra, or swim suit top unexpectedly revealing nipple and all. All witnesses are quite pleased in this situation.

(adj.) describes a situation or event that is so completely bitchin and astonishing that it renders one incapable of completing sentences. It is all that can be uttered.
Ted: "That was the best pizza I've ever put in my mouth."
Bill: "Dude, titty explosion."
by JAMITIN69 April 13, 2011

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