Amanda Markert was arrested in July 2009 for opening a can of whoopass on her first baby daddy Lance Gerbino. She gave him bloody lips, a nasty gash above his eye and injuries inside his mouth. Amanda had been out drinking with friends … and was pissed because she had to come home to help take care of their infant son. Gerbino claims Markert just started “going crazy” punching up fists while she was holding their son. Gerbino felt the baby was in danger … and that’s why he called police. Or maybe he felt like he was in danger. According to police records, Markert turned herself in to cops –booked under her legal name, Amareda Markert — but the assault charge was eventually dismissed after she completed an anger management course. Markert and Pauly D are involved in an ugly custody fight over their 6-month old daughter, Amabella … and they’ve both been very clear about how much they hate each other. Amanda even hung up on TMZ when they reached out to her about the situation.