it's my life

A guy walks into a theatrical agent's office, and he's carrying a little black bag.
The agent says, “Ok, let's see your act.”
So the guy reaches into his bag and takes out a hammer and a few walnuts. He puts the
walnuts on his head and then smashes them with the hammer.
“Well, what do you think?” he asks the agent.
Stunned the agent asks, “That's your act?”
“Yep.” Says the guy.
“So what else have you got in the black bag?”
"An Aspirin.”