This page is about the slang term old hat
old-fashioned, uninteresting, overly-familiar
- Wearing monster costumes to Halloween parties is so old hat. Let's do something different this year.
- Don't you think that getting tattoos and piercings is a bit old hat by now? Why don't you do something else to decorate your body?
Something that is called "old hat" is probably NOT
Contributor: Matt Errey