Levi Johnston: Tripp “Is Very Funky”

Levi Johnston, who posed for Playgirl just last week, says that he sees a little bit of himself in Tripp – his 10-month-old son with Sarah Palin’s daughter, Bristol, 19.

“He is very funky,” he told PEOPLE at the GQ Men of the Year Part in LA last night (November 18). “He’s got a lot of energy. He’s always looking to mess things up, break things. He’s crazy.”

The 19-year-old Alaska native adds that the best part about parenthood is “just the excitement of watching [his son] grow up”: “There’s a lot of responsibilities you take on. I became a teenager and I grew up really fast.”

Levi, whose relationship with Bristol came to an end in March, recently announced that he will be filling for joint custody of Tripp. He claims that the Palin family is making it difficult for him to see his son.

“It’s not working,” he told The Insider. “I’m done. It’s going to have to go to court. They just finally pushed me over the edge.”