 Many of the heat wave jokes at the start of the episode were based on past events of the crew 's lives . The sitting in front of the fridge @-@ freezer joke , came from McGrath , who had done a similar thing as a child . The Springfield Pool @-@ Mobile was based on a similar vehicle from David Mirkin 's childhood , where a truck with a " spinning cars " fairground ride on the back would often come around his neighborhood . Flanders ' feminine scream was performed by Tress MacNeille and not his regular voice actor Harry Shearer . Krusty 's mispronunciation of Ravi Shankar 's name was an ad @-@ lib , that Mirkin kept in after the editing process because he liked it so much . 
