Old and corny, but I love this one. Background information, this stems from the days when the bin men used to knock at the door for a tip at Christmas time.
Bin man knocks at door, woman opens it. 'Hi, Happy Christmas', woman brings him up to the bedroom and gives him a good 'seeing to'. He's delighted with himself and tells the other binmen. Two more knock on the door, and get the same result.
Then driver desides to try his luck. The woman answers the door and gives him a fiver. He is confused, and asks her if other binmen have called and if she gave them anything else.
She replied "Yes, I was just doing what my husband told me to. Before he left for work this morning he said. "Those binmen will be around looking for their tip this morning, just give the driver a fiver, and you can f##k the rest of them"
RE: Between your legs .....
Wag the dog between your legs