The Toy Story characters are back, and more adorable than ever. In the first-ever clip from "Partysaurus Rex," Rex uses his tiny little arms to keep the raver bath-tub bobbles floating. Looks like Rex is staring down the drain of a serious bath salts (or bubbles) addiction. The first taste is always free! The full short will be attached to the premiere of Finding Nemo in 3D on September 14.