Don't even think about it!

Dont even think about it! is a phrase commongly used in the United States when a person denies another something.

In 1995, Shaquille O' Neal, a popular basketball player, made a Pepsi commercial in which the phrase was prominently used. The commercial begins with Shaq at a street court playing hoops, and a little kid notices him. Then the kid exclaims Shaq's name, and Shaq, noticing the kid has a Pepsi on his hand, walks over and says 'Hey, can I have it?'. He bends over, supposing that his admirer will give him the soda, but then the kid, out of nowhere, says Don't even think about it!!. Then, a musical sound simulating that of a scratched record erupts, ending the commercial with the Pepsi logo and slogan.

This commercial was rather popular, and it was shown on tv for about three more years.