Watch : John Stamos Shares Hilarious Way Son Billy, 7, Name-Drops Him to Impress GirlsJohn Stamos is hoping his son will have mercy on the ladies. The Full House alum shared that he and wife Caitlin McHugh’s 7-year-old son Billy Stamos is already using his dad’s famous moniker to impress the girls at his new school. “He said, ‘Dad, we had to write down all our things,’” John exclusively told E! And he plays Uncle Jesse.”According to John, the girl had an incredibly shocked and excited reaction to the news. The 62-year-old joked, “He’s using it with the girls.”