Top definition
Great genitalia trick to be done while sitting down. This is accomplished when you sneak part of your sack out of your fly and hold it to the chair your sitting in. Then rise as much as you can while saying "awww man, looks like I sat in some gum."
Rebecca saw bill's nuts while he was doing the "gum sitter" for a couple of buddies.
by B*rad August 10, 2007
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