Delivery Boy

A pizza delivery boy rings the doorbell.
A beautiful woman with see-thru negligee opens the door and gives the delivery boy a big smile.
She asks him :
- Do you like what you see ?
The delivery boy says :
- Yeeeeeees.
The woman says :
- I hear someone coming, get in here and close the door.
When the door was closed the woman opens her negligee and asks the delivery boy :
- What part of me do you like best ?
The delivery boy says :
- Your ears.
- My ears !!, the woman says, but why !?
- Well, said the delivery boy, a while ago you said that you heard someone coming. That was me.