So there's this man, and he lived his whole life on Earth, and his name was Mr. Stevenson. When Mr. Stevenson was eight years old, he asked another little boy if he would like a Hurts Donut. The other boy said yes. So he hit him on the arm and he said, "Hurts Donut." Five years later, Mr. Stevenson asked another boy about his same age at that time if he would like a Hurts Donut. when the boy said yes, Mr. Stevenson stabbed him over and over again in his eye and his cheek with a pencil, saying "Hurts Donut." Over the years, Mr. Stevenson did very well in school. On graduation day, he was sat next to another young man, who, like Mr. Stevenson, had earned high marks. When he asked the boy if he would like a Hurts Donut, the boy said, "Not if you're gonna stab me in the eye with a pencil." "I wouldn't even touch you," said Mr. Stevenson. So when the boy agreed, he presented him with a photograph of the young man's fiancée at a bachelor party, on some guy's table, fucking herself with a beer bottle. As tears filled the young man's eyes, Mr. Stevenson was heard to say, "Hurts Donut." A few years later, Mr. Stevenson got a job as a sales clerk in an electronics store. Within a year, he was caught stealing and immediately incarcerated. When he asked his cellmate if he would like a Hurts Donut, his cellmate said yeah. So... he gave him a Hurts Donut. Over the years, Mr. Stevenson grew too old to take care of himself, so they put him in a hospital. One day, he asked the new nurse if she would like a Hurts Donut. In anticipation of her response, Mr. Stevenson began humming and making smacking noises with his mouth. When the nurse smiled and said, "I know about you, Mr. Stevenson," Mr. Stevenson blurted out something totally incoherent and... and began to laugh.
I've never understood this joke. But then, I've never been to Earth.