Nick Cannon joins the fun as this week's special guest, and discovers the darker side of Betty White when discussing his twins and the advantages of having a look-alike. Meanwhile, Betty's sassy senior tricksters are back on the streets pulling more funny pranks on the younger generation. This week, a bathrobe-clad senior searches for the art class in which he'll be a nude model, a lady offering to take pictures for tourists decides to turn the camera on herself instead, and an elderly prankster serves as a "cart valet" at Costco, helping sanitize carts for customers. less