noun. The yin to the fart knocker's yang.
Real citation: "technically speaking, the um... person in the rearward position is the knocker of the farts. the farts do belong to the forward partner, but they are the fart knockee."
(Anita Handle, Nov. 15, 2003, http://www.bikemojo.com/speak/archive/index.php/t-21628.html)
Made-up citation: "In every marriage, there is a fart knocker and a fart knockee, according to Dr. Phil."