Text message to me: Hey, did anyone lift my keys last night?
Me: Nope, definitely not me
* several hours pass *
Facebook message: Did you check whether you have my keys?
Me: I definitely don't have them, I only have 1 set
* 5 seconds pass *
Me: Hang on, that does sound like something I might do...
* checks bag *
Me: Yup, I have your keys.