Jar of Pain

This invention is simple and perhaps not a million dollar idea.

But it's a cookie jar. You put cookies in it. But...... Everytime you go for a cookie more than once withing 9 hours, it shocks you. Just a little zap to remind you to eat less cookies. The more cookies you go for in a 9 hour period, the stronger the zap.

You'll be eating less cookies in a day.