EXCLUSIVE: Old Spice Guy Isaiah Mustafa Accepts Fabio's Challenge [VIDEOS]

Things are heating up in the battle to be the true Old Spice Guy. After Fabio threw down the gauntlet in grand style Monday morning, Isaiah Mustafa has responded in his own hyper-verbose manner.

The response appears to have been shot very recently -- Mustafa references the resumption of the NFL season -- and the wide receiver-turned-pitchman has lost none of his charisma. He says he's been watching as "a certain man with hair who's been using a very harsh and accented vernacular" has challenged him to a duel.

In short: Challenge accepted. Mustafa has set up a "Mano a Mano in el Baño" challenge on Tuesday at 12 p.m. EST. Who knows what Old Spice and ad agency Wieden + Kennedy have in mind for the two. But the preview below makes it look like we should expect another Thrilla in Manila.