Voted : Sure. I was at funeral of a friends grandmother once and for some reason a funny story came to mind and I couldn't stop laughing, I had to cover my face and everyone thought I was crying, they were so touched I cried for this woman I hardly knew.
Voted : Yes, I have Frequently, in school, and to the teacher's dismay, the rest of the class would follow suit. Sometimes the teacher would crack up as well.