Three professors (a physicist, a chemist, and a statistician) are called in to see their dean. Just as they arrive the dean is called out of his office, leaving the three professors there. The professors see with alarm that there is a fire in the wastebasket.
The physicist says, “I know what to do! We must cool down the materials until their temperature is lower than the ignition temperature and then the fire will go out.”
The chemist says, “No! No! I know what to do! We must cut off the supply of oxygen so that the fire will go out due to lack of one of the reactants.”
While the physicist and chemist debate what course to take, they both are alarmed to see the statistician running around the room starting other fires. They both scream, “What are you doing?”
To which the statistician replies, “Trying to get an adequate sample size.
A guy walks into a sperm donor bank wearing a ski mask and holding a gun. He goes up to the nurse and demands her to open the sperm bank vault. She says “But sir, its just a sperm bank!”, “I don’t care, open it now!!!” he replies. So she opens the door to the vault and inside are all the sperm samples. The guy says “Take one of those sperm samples and drink it!”, she looks at him “BUT, they are sperm samples???” , “DO IT!”. So the nurse sucks it back. “That one there, drink that one as well.”, so the nurse drinks that one as well. Finally after 4 samples the man takes off his ski mask and says, “See honey – its not that hard.”