They Promised Me Ponies

They Promised Me Ponies is a novel that Lisa started to write.

History
Lisa and Janey were playing in the backyard when Bart began shooting a barrage of spitballs at them from his treehouse. When the girls took cover behind the swing set, Bart announced that he was using Lisa's unfinished novel, and held up the manuscript of They Promised Me Ponies. He then tore up more pages and continued shooting spitballs at the girls.