Top Definition
Scientifically known as the Valsalva maneuver. This maneuver is performed during defecation. It involves one of the largest muscles in the human body.
That loaf of white bread gave me some major constipation as I had to make multiple buttflex attempts before I could finally free up the load.
#butt #anal #maneuver #action #exertion
by Jonny Bot November 16, 2006
5 Words related to buttflex
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