Visiting Aunt Miriam Rugrats : Season 5 Episode 16

Aunt Miriam is back; this time, we're visiting her place, as she, Grandpa, and her friends play poker. The Rugrats become scared of the old ladies when one of them jokingly commented that Chuckie was good enough to eat, and when Miriam recruited Chuckie to become her "helper" (which was genuine, but the Rugrats felt different).