We suppose that in the minds of certain viewers, older women are more experienced and therefore know how to give better head. While the experience part may be true, this theory (if it can be called such) disallows for all the sprightly youngins in the biz who can easily suck a golf ball through a garden hose without shedding a tear.
Not that these mature gals are substandard in the art of cocksucking! Far from it. Everyone's skill sets and enthusiasm are apparent. Not all of 'em are beauty pageant winners ... they all perform on the Neal and Bob show pretty well. A few plus-sized Nubian snakes are scarfed to the very hilt. (Pssst: Say the title out loud and it sounds like a schoolyard taunt!)