I’ll get you a cupcake tomorrow.
“haha Thank you! I may not be there tomorrow. But you do not need to get me a cupcake either way.”
Oh. I’ll give it to the person of your choice then.
“Okay, whoever is sitting at the stool closest to the door is my person of choice.”

Have your cake and eat it, the classic loophole.

Also I need to go buy a cupcake but my phone has barely charged if I suddenly disappear for a bit.