Chewing With Mouth Open Rude

Dear Dr. Dave and Dr. Dee,

I notice that a lot of baseball players chew something (gum, tobacco?), and many chew with their mouths open. Then they give interviews with their mouths chewing away. They look ridiculous, don't you think?

Signed,

Grossed Out

Dear Grossed Out,

Yes, chewing anything with the mouth open is not proper etiquette whether at the dinner table or not. Therefore, talking with something in one's mouth is not proper either.