Peek-A-Boo

Here is a cute, clean joke:
Problem Name
The famous Olympic skier Picabo Street (pronounced Peek-A-Boo) is not just an athlete. She is now a nurse currently working at the Intensive Care Unit of a large metropolitan hospital. She is not permitted to answer the hospital telephones. It caused too much confusion when she would answer the phone and say,
Picabo, ICU.

Oh, come on, you know you smiled.