"You laugh so loud and strong."

I was laughing at something my sister said at the dinner table. My dad was in the kitchen and he gave me this disgusted look and said, "You laugh so loud and strong." 

He made it sound like such a terrible thing, so I thought that maybe my laugh must be annoying or something.
 
So now whenever something funny happens, I try really hard not to laugh, and I just kind of smile instead.