Gentlemen, if you've got your face buried between a lucky woman's legs and your mouth is affixed to her pussy can you really focus on the job (no pun intended) while your cock is sliding in and out of her hot, wet mouth?
And ladies, if you're slurping away on his boner can you focus on the job (again, no pun meant or implied) in hand while a tongue plays with your pussylips and slides in and out of your hole?
Is it better to exchange oral so that each of you can focus on the pleasure or is 69 really that good?