A Lyndhurst man allegedly convinced kids to undress during video chats, had explicit conversations with them online and distributed child porn, according to the Bergen County Prosecutor’s Office. Vincent P. Incalcaterra, 21, was arrested Thursday after a warrant was served at his home following a months-long child porn investigation. That investigation found that Incalcaterra used the internet to view, download and distribute files “depicting nude and/or sexually explicit prepubescent children,” according to prosecutors. He’s also accused of using social media to engage in “sexually explicit d…