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The act of growing a pair of breasts and spontaneously firing pineapple juice everywhere, usually as a result of intense excitement or pleasure.

The growth of the breasts only occurs if the subject is male or a female with undeveloped breasts.

Occurs most commonly after eating a pineapple whole on a Sunday, hence the name.
Guy 1: "Ayy man, my girlfriend had a total Funtime Pineapple Deluxe Sunday Special last night in bed. Tasted absolutely delicious."

Guy 2: "Man, that happened to me once, and the boobs haven't gone away yet."
by iLolbit February 18, 2017
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