Male Health
A bloke goes to see his doctor for a check-up. During the examination the doctor notices the bloke's bright yellow penis. The doctor asks him a few questions. 'Do you work with chemicals, young man?' 'No,' replies the bloke, 'I'm unemployed.' 'Well do you smoke?' asks the doctor. 'No, I don't smoke,' says the bloke.
By now the doctor is a bit perplexed. 'But how did you get a yellow penis then?' 'I dunno,' replies the man. 'I just sit at home all day watching porno videos and eating cheesy puffs.'