Moshe goes to see his Rabbi.  "Rabbi, last week I missed saying grace after meals."

"Why," asked the Rabbi.

"Because I forgot to wash my hands before the meal."

"That's twice you've broken the law but you still haven't told me why."

"The food wasn't kosher."

"You ate non-kosher food?" asked the Rabbi.

"It wasn't a Jewish restaurant."

"That makes it even worse," said the now angry Rabbi.  "Couldn't you have eaten in a kosher one?"

"What?  On Yom Kippur?"