What is so funny bout Peace Love and Understanding???

This is a song that really hits what I have been thinking. I dont understand why people cant just get along and be happy. Even after I get in an aruement with someone I will always put anything we have said or done (within reason) behind me. Others will hust keep fucking bringing it up again fucking everybosy's day up.........................oh well. Here is the link> Whats so funny bout P L and U.wma