Earl's t-shirt, when he shows Grace his tattoo, says Mazel Tov, which means congratulations in Hebrew (the literal translation is actually good luck, but it isn't used in that context).ETM
Grace: All the crap you left me, like breadcrumbs. And I followed them just like you planned.
The reference to "breadcrumbs" comes from the children's story Hänsel und Gretel adapted by Brothers Grimm. In the story, the two children left behind a trail of breadcrumbs, so they could find their way back home.ETM