I had a similar one to that.

Dennis R's Afternoon Joke The managers of a local bar are positive that their bartender is the strongest man around. They offer a standing bet of $2000 the bar tender will squeeze a lemon into a glass and then hand it to a patron. Anyone who can squeeze out one more drop of juice would win the money. Many people try but none succeed. One day a scrawny man wearing thick glasses comes into the bar and says in a squeaky voice. I would like to try the bet. After the laughter had died down the bartender grabbed a lemon, squeezes it and then hands the remains to the man. the crowd's laughter turns to silence as the man clench his fist around the lemon. Ten drops fall into the glass. Reluctantly the bartender hands over the $2,000 and asks the man what he does for a living? are you a weightlifter, a wrestler, or what/ the man replies I work for the Taxation Department.

Too damn right!