Finally!

You pull yourself back up onto the couch as Mary pants next to you... "T..That was awesome!" She says to you, face flushed with pleasure. You grin as you watch her basking in the afterglow of her orgasm and feel your stiff little cock straining in your pants... "Do you want me to return the favour?" Mary asks facetiously, already knowimg the answer as she drops to her knees in front of you... You quickly nod your head and begin to undo your belt buckle when.....