Top Definition
When having sex from the rear, known as "doggy style", after climaxing, and your partner turns around and smiles at you, you grab a propane tank and smack her in the your partner in the head with it.
"My girlfriend is pissed at me... I cumed all over her ass last night and when she was getting up to go take a shower, she turned around and looked at me and i gave her the propane tank suprise."
by Billy Carr September 26, 2006
6 Words related to propane tank suprise

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