During a moment of extreme sexual daydreaming or during a masturbation session, the raging boner manually overrides all bodily functions. Resulting in a non-consented fart.
by Ekim C Live August 08, 2013
When a man sees something stimulating, and ejaculates a small amount (or large amount) from the visual stimulation alone.
While watching TV last night, your hot sister showed up on the latest girls going wild commercial and caused an instant boner fart.
by ronchx October 24, 2009
by slap happy rice July 17, 2007
When a male ejaculates in Alaska, and only steam comes out. The steam is called the fart hence the name bonerfart.
by ReachCarter November 06, 2014