Putz is a respected and necessary profession in Mos Eisley. Basically you must speak gibberish often, and harass locals. In return, you must accept knees to the groin, or punches to the face. Sometimes kicks to the face.
Most people in the Putz industry will tell you they make their living through tips. Grif Mansley was one of the several competing Putz's in Mos Eisley.