ElderlyJokes A Boy Wakes Up On His Birthday. What Follows Next Will Make You Laugh Crazy. 6.5k Views A boy wakes up on his birthday. He runs to his dad and yells, “Dad, it’s my birthday! Guess how old I am!” Playing along, the boy’s father asks, “How old are you?” The boys yell, “I’m 11!” He then runs out of the room. Next, the boy runs to his grandma and yells, “Grandma, it’s my birthday! Guess how old I am!” Grandma calmly says,” Come here.” And the boy slowly approached. The grandma takes her old, frail, white hand and sticks it in the boy’s underpants. After a few minutes of reaching and fondling, Grandma says, “You’re 11.” The boy says, “Wow, how did you know?”. Grandma responds, “I heard you tell your father.” See more Previous joke A Salesman’s Car Breaks Down. Next joke Two Old Guys Were Sitting On A Park Bench.