Definition 1: When you Use the reverse jackhammer on your old lady, while pounding her in the ass. You then stand on her wrists, forcing her to gaze into your asshole.
Usage Example: Brad was tired last night, but when his old lady said mudpump, shit hit the fan.
Mudpump
Definition 1: When you Use the reverse jackhammer on your old lady, while pounding her in the ass. You then stand on her wrists, forcing her to gaze into your asshole. 
Usage Example: Brad was tired last night, but when his old lady said mudpump, shit hit the fan.
