09/09/2009 at 04:30 PM EDT
, who is expecting his second child
with girlfriend Camila Alves, says he has his hands full with his very active 14-month-old son, Levi.
"He's motoring around like [Olympic sprinter] Usain Bolt and eatin like [competitive eater Takeru] Kobayashi, Camila and I can barely keep up," the actor writes on his blog
. "We call him the fruit bandit 'cause if there's fruit out, he's on it, takin it and eatin it. He's gettin bigger, more fun, smarter and craftier by the day."
To make sure Levi – or his soon-to-be sibling – doesn't get into any trouble, the couple is taking extra precaution.
"We had to super child proof the new house," says the dad.
The couple aren't sure if Levi will be having a little brother or sister "but we have our instincts," the actor says, adding that Levi is "doing terrific" while waiting for the family's new arrival.