Ross Smith and his feisty granny visited the Allrecipes studio to decorate cookie portraits of each other, chat about their outrageous prankster video series, spill personal secrets, and tease us with their upcoming show wherein they challenge celebrities to beat Granny at beer pong.

Smith also talks about their philanthropic work bringing joy and puppies to nursing homes, and the custom pet-shaped pillows they give to each senior after the puppies go home. For every pillow you create and buy at, they're able to give one back to someone with Alzheimer's or dementia.

Watch Smith's and his granny's latest video hijinks on Smith's YouTube channel.

Follow Smith on Facebook @RossSmith

Watch this episode of "Treat Yourself" and many more on Allrecipes Twitter.

Learn how to make the best sugar cookies, and treat yourself (and your family) with one of our top-rated sugar cookie recipes.

These easy tips to decorate sugar cookies guarantee your cookie self-portraits will be camera-ready.