Dave has decided to become a bone marrow donor. The packet came with the cheek swab kit. Dave was reading the instructions while making a pb&j sandwich.
Dave: I think I'll wait until after I finish eating. I don't want to get a response saying, "we regret to inform you that your DNA indicates you are a strawberry."
Side Note: Did you know there aren't any funny quotes about DNA? Seems like a subject that should be a laugh a minute.