Natasha Lyonne was slurring her words as she led a Q&A session with filmmakers at the Tribeca Film Festival ... and it's all on video. The actress took the stage Thursday to chat with "Jail Time Records" directors Dione Roach and Steve Happi about their documentary ... and you can see them struggling at points to understand what she's asking. In one bizarre instance -- between difficult-to-understand questions about the filmmaking process -- Natasha looks out at the audience and goes ... "Hey,