Protesters formed 'a human chain' [=they stood next to each other with their arms linked] around the ancient tree to prevent it from being cut down.
In the United States, the President as the commander in chief is at the head of the military 'chain of command'.
I thought he really won the lottery but he was only 'pulling my chain'. [=he was only playing a joke on me]
(..) She said,"you don't know me" doyou "n't even care" oh,yeah... oh,good lord. She said,"you don't know me" "you don't wear my chains" oh,yeah. God,that's a good song. If you're compiling a mix cd for a double suicide. Oh,I hope that scratching post is for you. (..)2007 TvShow: The Big Bang Theory Title: The Fuzzy Boots Corollary Season: 1 Episode 3