Sarah Palin’s daughter Bristol has filed legal papers against Levi Johnston, asking the Playgirl poser to pay child support for their son. In the papers, Bristol alleges that she’s received “limited and sporadic financial assistance” since the baby was born thirteen months ago.

Briston does say that Johnston has given her approximately $4,000 to date. She is now legally asking for $1,750 per month and $18,350 in past support.

Levi Johnston was a little unprepared to answer questions when the press tracked him down for a response. “I don’t really know, but my lawyer does,” he told reporters, saying he isn’t sure how much money he’s given to Bristol. He added that any allegations he might be a “deadbeat dad” are “absurd.” Levi said he is “making an effort” to be there for his son.