This would have been my ad for M&M 

The story behind this Spec Ad: 

One of my office colleagues brought an M&M packet to the office and we were just discussing how it relates to gems.

Then my other colleague had the first bite and noticed the groundnut in it. So, suddenly it became a nutritional chocolate.

That’s when we related it to Snickers and hence came the line “Snicker in small bites”.