Which Episode Was This

One very vague memory I have from watching a live action version of Mario is an episode where Luigi starts acting weird after eating something and talks creepily. With the cheesiness and the long time ago, it's hard to remember what happened. But, I remember how one of the guest stars pointed a gun at Luigi. The gun just made him stop acting weird. It was something like that. I've been looking for that clip, and couldn't find it. Anybody know?