Answer:
It is the electronic version of junk mail or a salty meat in a can.
I work when I play and play when I work.
The barber of New York shave all men in New York. No man living in New York is allowed to shave himself. The barber of Nee York lives in New York. Who shaves the barber ?
What has a single eye but cannot see?
A hill full, a hole full; yet you cannot catch a bowl full. What is it?
People take me on walks and I run and have fun. What am I?