Will Arnett isn't takin' any crap from Jason Bateman ... especially when it comes to being asked if he poops in front of his ex-wife, Amy Poehler . Will and Jason sat down Monday for an episode of the actors' podcast, "Smartless," which they cohost with Sean Hayes , and things got a little tense when the convo turned to Will's bathroom habits during his marriage to Amy. Check out the clip ... Jason asks Will if he ever pooped in front of Amy, and Will isn't amused, claiming Jason is only