An elderly man turns to his wife one night as they are
getting into bed and says: "You know, we're not spring
chickens any more. If I die first, promise me you'll
re-marry." "Oh, yes, in a heartbeat", she replied. "Hmm,
that was not exactly the answer I expected, but since we're
being so honest, tell me would you still live in this
house?" he asked. "Absolutely". "Would you let him drive my
car?" "Yep". "Would you sleep in this bed together?" "Yep".
"Would you let him use my golf clubs?" "Probably not". "I
don't get it. Why not?"

... "He's a lefty".