Are you one of us? Well, that's up to you.

If you want to know, well, here are some clues:

When you hear last call do you order two?

Are you still going strong when the others are through?

When the party's over and everyone's leaving,

Do they check the bathroom to see if you're heaving?

Are you one of us? If it's still a riddle,

Find a rock and a hard place and check in the middle.