bag of squirt
As a man and woman have intercourse, the woman being a "squirter". At the time of climax while spraying like a kitten a third party then enters and has her aquadic goodies collected in a zip lock bag. saving for a splashtastic assault on the unwilling.
"I saved my bag of squirt from my last date with suzie and while roaming the park I happened onto a slummbering homeless man and splashed my bag of squirt into his suck hole."