I need a push

A man and his wife are woke from their sleep late one night by a knock at their door. The man rushes to the door to find a man that only says
"I need a push"

So the man slams the door in his face and goes back to bed. When he returns his wife is still awake and says
wife: "who was that?"
husband: "some idiot looking for a push"
wife: "omg that poor man might be in trouble, you should go give him a push"

So the man feeling guilty runs to the door and opens it and yells "hey buddy, where are you? I'll give you a push".

The stranger replies " I'm over here on the swing"