Punky Brewster Season 4 Episode 19 One Plus Tutor is Three ( Air Date 1988-05-24 ) Genre Comedy, Kids category. Overview "Punky's new math tutor Walker Wimbley turns out to be a Casanova who tests the friendship between Punky and Margaux by falling head over heals for Margaux -- crushing a lovestruck Punky. Walker turns out to be a jerk, and with Margaux and Cherie's help, Punky gets even with Walker.".