When a rookie tries to make banana pudding but forgets a step leaving chunks of cream cheese in the mix for everyone to consume
That rookie's banana pudding turned into a real cream cheese surprise.

*takes bite* Was that a bit of banana? Nope just cream cheese surprise mother fucker!
by Kazeemt1 November 16, 2017
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The sexual act of filling your asshole up with whipped cream then proceeding to fart said cream into your partner's mouth.
Ben: Baby give me a Boston Cream Surprise tonight

Stacy: Ew.
by Dirk Dasterdly August 14, 2021
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