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The act of ejaculating in your friends mailbox multiple times while he/she is on vacation, then letting it sit till they return. When they arrive home they will certainly have a surprise waiting for them in their mailbox
Phil: Dude i left jenna and her family a Cheesy Cum Surprise while she was in hawaii.

Chris: Hahahahaha that'll be the best surprise shes gotten since she woke up pregnant in mexico
by MrSilva800 June 16, 2011
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