"When people show you how they are, believe them."--Maya Angelou
Words to live by. Right up there with the Oscar Wilde aphorism "Everything popular is wrong." I also like this Wilde declaration: "A true friend stabs you in the front." If only we'd all practice what Angelou preaches.
Here's my favorite Jody Watley song, "Friends" (link). It's about people showing you how they are by stabbing you in the front and back. It went to No. 9 on the Hot 100 in 1989. A case of something being popular and right.