Complex sentence: In 1998, one commercial poked fun at products with cartoon mascots, in which a mascot for a fictitious drink called "Sun Fizz" comes to life, terrifying the kids and mother, and starts to chase them.
Split into simpler sentences: In 1998, one commercial poked fun at products which featured cartoon mascots. In it, the mascot for a fictitious drink called "Sun Fizz" comes to life, terrifying the kids and mother, and starts to chase them.