It is called contagious laughter. This is because positive sounds, such as laughter, tend to trigger a response in the premotor cortical region, i.e., the part of our brain that reacts to sound. It's a nice and natural thing lol reply
I was at my great uncle's funeral yesterday and he served in the Army so two people came and gave my cousin his flag for his service in the military and when they started playing Taps, I started laughing for some reason. No one could hear me but I still felt really bad. The sound of trumpets makes me laugh and I don't know why reply
