A male performing any motorsport activity, such as motocross, ATV riding, or trail riding, in the dirt, mud, or sand, in highly dry and dusty condtions for extended periods of time, sometimes days, without bathing and while wearing jockey-type underwear, whereby creating a soupy mess of sweat, dirt, and ball-mustard on and around the unkempt scrotum, shaft, and testicles prior to a first date with a recent female acquaintance who proceeds to drink herself into oblivion, therefore loosening up to accept your dirty, soupy, stinkfest of a cock into her mouth, until you finish on her face.
I met this slut at the bar one night after a long day of riding motocross, she was so drunk, I gave her the Dirty Plummer.
by Dr. Fuckemyoung March 18, 2011
while she was giving me realy good like I mean really good oral sex. I Dirty Plummer her and she still went to town and it didn't even phase her.
by meltingsnowman April 20, 2009