A fork of Rural Dictionary
To be performed during oral sex.
At the point of climax, the male being given fellatio removes his penis and ejaculates onto the upper lip of his partner, giving her a thick jizz mustache; much like that of Wilford Brimley.
Last night while receiving head from the hooker I solicited, I pulled out and gave that Ho a Wilford Brimley. Ironically enough she has Diabeetus.