Top Definition
When a guy wakes up in the middle of the night to take a piss and doesn't realize he left a condom on from having sex. While peeing, he fills the condom up with piss creating a piss filled water balloon (also known as a Golden Balloon)
He inadvertently created a Midnight Water Balloon while taking a piss late at night.
by OMGDonkey February 12, 2009
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