My own kids. Boys ages 10 and 8. At their great-grandfathers wake, they got a chair and moved it to the casket and started making his mouth into smiley face. Laughing the whole time. When me and their grandfather (my father in law) saw it, I immediately pulled them away and told them they shouldn't do that, grandpa laughed and said "it's fine, he would have really loved that they did that". We later found out that the great grandfather had asked the funeral home ahead of time to put a sign in his hand that said "thanks for coming" but they refused!