Funny (and Cheap!) T-shirts

WGBH, the Boston Public TV station where all those fine British mystery series made their first American appearance, is having a great sale.

I particularly like a couple of t-shirts, WHAT HAPPENS AT GRANDMA'S STAYS AT GRANDMA'S and WHAT PART OF THE QUANTUM THEORY DON'T YOU UNDERSTAND? -- at the amazing price of $5.70 each!