1) Chewing gum 
Chewels is a defunct brand of chewing gum. It was the first gum that had a liquid center that oozed out when chewed. It was similar to the later gum called `Freshen Up`. ==Advertising== A commercial for Chewels gum was one of the first advertisements aired on MTV. The commercial was later featured on MTV`s website for their 25th anniversary, al......