This joke has probably been going around for many more years than I have. However, I'll post it anyway. Have fun!
A monastery has accepted 3 candidates for becoming the newest novice monks. So far, they have passed all the tests, and only one more test stands in their way. The CELIBACY TEST!!!!!!!!!!
The lucky 3 sit in a line on a bench, and have little bells attached to their penises, to see how...excited they are at what they say. Then, in comes a hot, sexy belly-dancer, dressed in a series of veils, who begins to dance erotically for the 3 candidates.
Before even the second veil has come off, TING-A-LING!! the first candidate's bell has rung. The old monk in charge of them states, disapprovingly, "I am disappointed in you, Candidate 1. Clearly you have no control whatsoever over your carnal desires. You and take a freezing, cold shower and think about your failure".
The dance continues, and, before long, the second candidate's bell has rung. TING-A-LING!! again, the old monk says, "You have very weak control over your carnal desires, Candidate 2. Again, this is disappointing. Go to the cold shower, and ponder over your failure."
However, even when the belly-dancer has taken off all her veils, and is dancing completely naked, the third candidate shows no emotion whatsoever, and his bell does not ring. Finally, when the belly-dancer stops, exhausted.
"I am very impressed, Candidate 3," says the old monk. "Clearly you have what it takes to be an excellent monk. You have passed the chastity test. For now, please go to join your failed fellows in the cold shower."