An individual who has a strong affection and attraction towards butts, usually in a sexual manner. Most buttfreaks are biological males who are instinctual drawn to the glorious sight of the varied shapes and sizes of the femalebutt. Most may occasionally be mistaken for a pervert.
My girlfriend slapped me today because I couldn't stop looking at some hot body butts while we were at the pool. It's hard being such a buttfreak.
A made by hand creation with eyes and "freckle" on its backside that brings joy to a huge base of people, including autistic children who respond to the variety of colors and textures of yarn used in their creation.