Someone on Yahoo! Answers once asked why Garfield hates Mondays so much, to which one contributor thoughtfully responded, "Garfield is a symbol for all that is self-indulgent, lazy, goofy and sometimes lovable in all of us. We love him because he is us. He hates Mondays because we do."
Check out Garfield's shop for more classic "I Hate Mondays" merch, or go for a girly update in this adorable pink kitten tee by Corner Shop.