He replied, "So I can fix the pipes in here, its kinda leaky."
The second one said, "I wanna be an electrician." The others laughed at this, and asked, "Why an electrician?"
He replied, "So I can get some lights in here, its dark!"
The third one said "I wanna be a boxer." The others thought this was hilarious, and laughed for a full 5 minutes, before asking, "Why in God's name do you want to be a boxer?"
He replied, "So I can beat the shit out of that bald guy who keeps coming in here and spitting on us!