John-the-Tourist writes:
“What happens in Vegas stays in Vegas“.  Not quite true – my intrepid Science Cheerleader squad member John Ohab nabbed a snazzy Einstein T-shirt while he was recently in Las Vegas and presumably got the shirt outside the city limits.

Now, if you REALLY want to do something that you don’t want your mother to find out about, you need to be in the vicinity of a black hole, in which (as far as we know) nothing can escape.  My friend Matt (who works at the Fermi National Accelerator Laboratory) quipped “What happens in the event horizon stays in the event horizon”.  Matt’s son Owen told the joke on “CBS Sunday Morning” and Matt’s wife Robin (who is a graphical designer) turned the quip into a T-shirt (modeled by their daughter Lindsay) that you can purchase from Cafe Press. There is also a light-background version of the design.
So, be bold!  Show the universe that secrets can be kept – as long as you are within the Schwarzschild radius of a black hole.
P.S. – Don’t forget our own nifty Science Cheerleader T-shirts!  Make a fashion statement and fill up your closet!
Image source:  Matt Crawford