A lot of times whenever I'm having a serious conversation with my gf or my friends like thing about death or one of their relatives being sick I tend to laugh. I don't think the situation is funny but for some reason I keep laughing at the worst times. I worry if I ever attend a funeral I might start laughing. Anyone know any way to resolve this? It is starting to strain some of my relationships with people because they start asking what the hell am I laughing at.