...1 step worse Lucia...My am-I-drunk test is to remember WHY alcohol is a diuretc... alcohol molecules are so structurally similar to vasopressin (an ADH (anti diuretic hormone)) that the receptors which usually detect, process and deal with vasopressin in the liver are busy dealing with the alcohol in your blood stream.... as such, your body doesn't detect the "hold water" signals, and your kidneys don't reabsorb sufficient water...
my other am-I-drunk test is to try EXPLAINING that to someone over a beer.

Ack... actual biology knowledge!... *rubs temples* looks like I might not fail my exam after all...