Three types of laughter....Maybe for you

...Thirdly, it has to be understood that there are three types of laughter. The first is when you laugh at someone else. This is the meanest, the lowest, the most ordinary and vulgar when you laugh at the expense of somebody else. This is the violent, the aggressive, the insulting type. Deep down in this laughter there is always a feeling of revenge.

http://www.curezone.org/forums/fm.asp?i=2281877#i

You can laugh at someone else just because they are funny.

https://youtu.be/XVpZcRQbXSs