Parents everywhere may soon have Vince Gilligan to thank for a new type of crystal meth hitting the streets. The executive producer of AMC's Breaking Bad stopped by The Colbert Report last night to talk about the show and its final eight episodes, which will air this summer. As of now, Gilligan has no idea how the last season of the show—which has inspired some controversial "meth candy"—will pan out for the characters. "It's probably not gonna end well," he says with a laugh. "My writers, as we speak, are back in Los Angeles now. Hopefully they haven't left for the day and are working on answering that very question now." Gilligan also speaks about the crash course in meth culture and street names for the drug he needed to learn for the show—prompting a hilarious "meth-off" between him and Colbert. The host concludes by asking the question on everyone's mind: is there really blue crystal meth on the market? "Well, there is now," says Gilligan.