MAD SCIENTISTS

Kristen was trying to get the boys in gear to clean up their rooms a bit, when she found something that didn't seem quite right in Blane's room. There was a test tube (from one of his science kits) taped to the window. She asked what it was, and Tobin responded a little too emphatically, "It's just water!"

Right. Yellowish water. That made the test tube warm to the touch...

I'm not sure what else to say here. At least they were smart enough to fill the vial, over the toilet.