I have a theory about life. You either have a poker face or you absolutely don't. Those who don't are unable to keep secrets and hard-pressed to hide surprises.
Jacob falls into that category along with me. So when he comes home outwardly empty-handed from a vague errand and yells for me to clear out of the front room because he has to take something upstairs and for gosh sakes don't even look, it's a surefire confirmation that he is up to something.
I don't know what, but he's funny.