Little Shop of Horrors- Day 12

Today we did some work on our character profiles when we are on the street. I thought about my character and I created a life:

Recently fired from his dead end job,

Lives in a one bedroom flat with four other guys,

No way of getting another job,

Angry at the world.

However I'm finding it difficult to play this character over the top and be it for when I sing "when your life's a joke" I skid row. So I need to figure a way to portray this character while being over the top.