Totally Gross. That's the name of a fun game that Ryan received for his birthday. It's from University Games, and can be purchased in various places.
The boys and I played it this morning and, for a science game, it's pretty fun. Lots of fun science trivia, like the fact that a tick only eats three times in its lifetime, or that frogs close their eyes to help them push food down when they swallow, and just enough actual gross stuff to keep the boys entertained. Good Big Science Saturday stuff.