Who said "Be thankful for every day you're not in detention."?

This quote is attributed to Bart Simpson.

Be thankful for every day you're not in detention. - Bart Simpson

"Be thankful for every day you're not in detention."

Bart Simpson Gratitude

"Eat my shorts!"

"Ay caramba!"

"Don't have a cow, man."

"Cowabunga!"

"Gratitude makes life richer."

"A grateful heart is a happy heart."

"Respect those who came before us."

"Life's greatest treasures are the people we love"