Diario Judío México - Shaky blue clouds streak over a pastel blue sky. Wobbly yellow letters appear. Why, it’s the opening moments of The Simpsons! And that’s Bart writing on the school blackboard! But then things get weird. On closer inspection, we see he’s writing: “I will remember to count the omer. I will remember to count the omer.” What exactly is the “omer” and why is Bart counting it?