Jim Davis' "Small Talk" feature for this Sunday has to do with asking students what rules they would change, eliminate or add at their school, and several of the students interviewed mentioned wishing they could chew gum.
This immediately made me remember Jan Hall, my English and drama teacher at Cascade. She said to us that she didn't care if we chewed gum in class -- as long as it wasn't grape Bubble Yum, a popular variety at the time, because grape Bubble Yum had a very powerful aroma and she could smell it from the front of the classroom.
On my first-ever foreign mission trip, to Nicaragua in 2003, we were holding some events in an elementary school classroom (the school was on break at the time) and I was wandering around and noticed a sign on the wall reading "íNo masticar chicle!" -- which, in English, would be "Do not chew gum." I laughed and pointed the sign out to a teammate, saying that some things were universal.