Jenny resembles Samantha Stankey from Bart's Friend Falls in Love. Ironically, the exact reverse of the episode's events seem to be the main plot line. Like in "Bart's Friend Falls in Love" when Bart tries to ruin Milhouse's romance with Samantha Stankey and in this episode Milhouse tries to ruin Bart's relationship with Jenny.
When the letters from the school sign above the front door, say "Springfield Elementary School", fell down, the N's and a broken M became Z's over Willy's head.
When Milhouse said "Hello Bart" it sounded like something Sideshow Bob would say.
Bart and Milhouse pulled the prank outside of school hours meaning that Milhouse couldn't be suspended. It have to be school hours if they are kids their and the school bell rings.
When Groundskeeper Willie is knocked unconscious, three Ns land next to him. However, there are only two Ns in "SPRINGFIELD ELEMENTARY SCHOOL". However, one of the "M" legs fell, making the M like an N