Bobby had long heard the stories of an amazing family tradition.
It seemed that his father, grandfather and great-grandfather had all been able to walk on water on their 21st birthday. On that special day, they’d each walked across the lake to the bar on the far side for their first legal drink.
So, when Bobby’s 21st birthday came around, he and his pal Marty took a boat out to the middle of the lake, Bobby stepped out of the boat… and nearly drowned! Marty managed to pull him to safety in the nick of time.
Furious and confused, Bobby went to see his grandmother. ‘Grandma,’ he asked, ‘it’s my 21st birthday, so why can’t I walk ‘cross the lake like my father, his father, and his father before him?
Grandma looked deeply into Bobby’s troubled eyes and said, ‘Because your father, your grandfather and your great-grandfather were born in July, when the lake is frozen, and you were born in January, you flamin’ idiot!’