Will Arnett drew a hard line on Monday's episode of SmartLess when co-host Jason Bateman steered a bathroom conversation toward Arnett's ex-wife, Amy Poehler . The exchange went down with Bateman and Sean Hayes celebrating their shared comfort with "power burps" and flatulence between friends. Bateman noted that Arnett keeps his bodily functions strictly private, saying, "Willie doesn't, he doesn't," before pivoting to the question that set Arnett off. "Did you ever poo in front of, um, Amy?" Bateman inquired (around the 4-minute mark) on the June 22 episode. With swiftness, Arnett fired back. "Are you looking for clicks? Are you trying to get something that we can click around?" Bateman pressed on, reminding Arnett that he and Poehler had been married and raised two kids together. "I always forget people are listening to this," Bateman said. "Wait, but hang on. You were married to her, had two kids. You guys never went to the bathroom in front of each other?" Arnettt refused to budge. "I'm sorry.…