Chewing gum-

So- someone needs to explain this to me.  My Grandma and Grandpa C came over tonight to see me.  I was sitting in Grandma's lap and I noticed that she and Grandpa were both chewing on something. Only I didn't see them put anything in their mouths... they were just chewing.  hmmm... so I decided to chew too and see if that would make them give me some of whatever they had that must be so GOOD. I mean they were chewing like they really liked it.  So I watched them a while, looking back and forth, and I started to chew just like they were. The only everyone laughed a lot. And I still don't know what they had. But I want it. Maybe next time I'll just reach into  mouth and see whats in there.  That sounds like a good idea.