Shrek the Third (also known as Shrek 3) is a 2007 American computer-animated comedy film loosely based on the 1990 children's picture book Shrek! by William Steig. Fiona puckers up her lips and he leans in for a kiss, but their bulky outfits prevent it. They let out a huge breath of air] Shrek : Oh, my butt is itching up a storm and I can't reach it in this monkey suit.