Junior's Mama

I just found this movie at a local video store that still has a huge VHS selection, and I noticed in the closing credits that "Mama" was uncredited. So, I came here to the IMDB to see if they had the part listed (as they often have a lot of uncredited roles identified), but still no listing for "Mama." Does anybody know who played her? (I'm pretty sure it was a male actor in the outfit...if it really was a woman, my apologies.)

"Little do they know how little I know about the little there is to know." - Neddy Seagoon