Yes, "Fox NFL Sunday" host and former Dallas Cowboys coach Jimmy Johnson has been enlisted by ExtenZe to be the face (or some body part) of its new ad campaign, as Ad Age is reporting. The cringe-worthy tagline? "Go long with ExtenZe. I do!" Which, natch, is our cue to chime in with: It's a hard job, but somebody's gotta do it. (Ba-dum-dum.) Eighth-grade humor to sell sex products: never gets old, does it?