Saw this on a fellow at Six Flags:
PIN number and ATM machine came to mind as possible inspiration for this shirt (maybe I was feeling cash-strapped at the time). This site is a fun look at what they call Redundant Acronym Phrases (I think they should be called RAP phrases). Any other examples come to mind?
In unrelated news
Another Six Flags shirt:
If you love him
Let him go.
If he doesn't come back
He's with me.
*Shirt Happens, Getting My Shirt Together... it's all so base. There's a better one, I'll think on it whilst camping this weekend.