Top Definition
The act of slapping yours or another person’s schlong against any part of the human body, which then results in the prominent yet classic schlap of the schlong sound; however the face and chin are usually the prime targets.
1: Jill and I were having that angry make up sex when I decided to give her a thunder schlap that would wake the neighbors.

2: My ex-girlfriend in college once invited me into her dorm room to have a threesome with her roommate Sarah. It was only then that I discovered she merely wanted to utilize my schlong as a double handed weapon for schlaping Sarah across her face.

3: Executing the thunder shclap is illegal in the state of Utah and or any other area in the USA that contains a large presence of Mormons. Failure to comply with this regulatory policy could lead to a fine of up to $250 and up to 6 months in the county jail.
by C.B. Radio March 09, 2010

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