Clench your teeth

You feel the adrenaline pumping through your veins, as you come up with an idea. You're getting ready, trying to find the strength.

The drunk takes a sip from the green flask. This is your chance.

You bite as hard as you can. You feel the taste of blood, dirt and sweat filling your mouth. You feel sick, but you grit your teeth even harder.

The man lets out a scream full of pain and fury. He looks down at his wounded hand with tears in his eyes.
"Ya' fucking cunt! I'll kill ya'! I'll fuckin' smear your head on the wall!

You're doing your best to escape this place, but the bearded hobo is still blocking the passage somehow.
Moving chaotically left and right, the drunk moves away from the left side of the alley.

This might be your escape route.