Lego Bricks - potential weapon?

Lego bricks are great. Such a simply toy, with so many benefits. What other toy allow your kids to truly imagine and build, as well as give them a tool to debilitate their parents in one felt swoop? I experienced a shock this morning, when headed to the basement to bring up some laundry. Yup, you guessed it... first step down, a Lego brick. It was a 2 x 2 brick, the size just perfect to hit the arch of your foot and make a grown man flinch in pain and do the one legged hop dance. Evil little buggers! Lego = WMD? maybe...