“No way, she’s faking! If Lisa stays home, I stay home.” – Bart Simpson
“If Bart stays home, I’m going to school.” – Lisa Simpson
“Fine. Then, wait a minute, if Lisa goes to school, then I go to school. But then Lisa stays home, so I stay home. So, Lisa goes to school . . .” – Bart Simpson
“Lisa, don’t confuse your brother like that.” – Marge Simpson
Happy 20th Anniversary to “Bart’s Dog Gets an F”! Original airdate 7 March 1991.