Guy walks into dentist.
Dentist asks "So, what can I do for you today"
Guy: "I have a bit of a problem, I feel like a moth"
Dentist: "Sorry pal, nothing I can do for you, you need to see a doctor, or a shrink"
Guy: "I know I do"
Dentist "So what the eff are you doing in here?"
Guy replies "Your light was on"