An old guy was supposed to submit samples for his sperm count…
…but returned the jar empty. When asked why, he said: “I tried one hand, then two, then I asked my maid to help. She used her hands, her mouth, even her thighs, but nothing! I even asked the gardener. Even the neighbor! Even the neighbor’s gardener! But no one could open the damn jar!”
(Found this in a book. Credit to wherever it’s due)