Little Johnny’s mother decided…

Little Johnny’s mother decided to give her son an anatomy lesson one day.
She took off all of her clothes and pointed to her vagina, and said, “Johnny, this is where you come from.”
Johnny went to school the next day smiling and insisting that all his friends now refer to him as “Lucky Johnny.”
“Why?” one asked.
Johnny held his fingers an inch apart and said, “Because I came this close to being a little shit.”