If you give a kid a test tube...

...he's going to fill it with urine and leave it on his bedside table.

Test tubes at the bedside.

I knew this vaguely, but now recognize it as a certainty. After a lab exercise in my biology course last week, I brought home a slew of glass test tubes. Normally, we dispose of these at our college, which I always hate to do, but it's challenging to fully re…