Traveling Salesman Limerick

A man who sold marital aids door to door
  heard from a husband in an uproar.
   "An 'aid' for whom?
   It can't be the groom.
 Your product has three speeds, so I now need four."  

Four on the Floor [Limerick]

A girl got herself an intrepid beau,
but she'd long owned a vibrating dildo.
"That thing has three speeds
to exceed her base needs
I'll need four, none too quick nor too slow."