It's probably best to take a break from studying for a science test when, after hours of reviewing the material, you suddenly fling the textbook aside and sing, to the tune of Jethro Tull's "Aqualung," "Water-bearing rock form! AQUIFER!"
Of course, that's a purely hypothetical scenario...
Yep...
Right...
Wouldn't know what that's like to suddenly lose it that way...
Ahem...
Um, moving right along, then...