mrs. so and so erson Share definition Flag So and So's stepmom. She has questionable taste... and like a million jogging suits. "YOU LITTLE BRATS BEST SHUT YOUR YAPS!!!" "Yes, Mrs. So and So Erson." mrs. so and so erson by SMD January 29, 2005 0 0 Get merch Get the mrs. so and so erson mug. Buy Now — $32.95 See more merch