Everybody Loves Raymond - Season 6 Episode 21
Call Me Mom

Marie gets upset when she sees Ray calling Lois, Debras mother, mom so Ray tells Debra that maybe she should start calling Marie mom. When Debra calls Marie mom in front of Lois, Lois gets upset because she doesnt think that Debra should be calling Marie mom since she isnt her mother. An argument between Marie and Lois erupts and they decide that perhaps it would be best if Ray and Debra only call their respective mothers mom.