person A: So the other day I ate a piece of cake that my mom made for my dad as a gift_comma_ oops.
person B: Oh no!  Well what he didn't know won't hurt him.  Hopefully you can get a replacement.
person A: Unfortunately he walked in right as I took the last bite! Fortunately it all worked out so no harm done.
person B: Awww well I am glad he was understanding about it.