I found a list of the 10 most common signs that alcoholism is the problem. Any one of the signs is a good indicator. If there or 2 or more are present, then some serious thinking needs to happen. Hope it helps.
1. Drinking alone
2. Making excuses, finding excuses to drink
3. Daily or frequent drinking needed to function
4. Inability to reduce or stop alcohol intake
5. Violent episodes associated with drinking
6. Drinking secretly
7. Becoming angry when confronted about drinking
8. Poor eating habits
9. Failure to care for physical appearance
10. Trembling in the morning

YOU'RE NOT REALLY DRUNK, IF YOU CAN LIE ON THE FLOOR WITHOUT HANGING ON !!!
... Hehe !!!

A key indicator is the tendency to miss words out of the middle of questions