Apparently if you click "new blank spreedsheet" in google calc, then realize you're on the wrong account and try to switch, it'll pop up a window asking you to request access to your blank document... from yourself.
@foone just like when it pops up a box asking "hey we just want to confirm, is this you?" but without any like authentication afterwards, just a "yes" and "no, I don't know how I got here"
@foone still better than Google Maps that just resets you to the default map view when switching account, especially infuriating given that you can get the fancy behavior (switch account and keep the same view) just manually changing the &authuser= parameter in the URL.