Not a shaving oversight but...

My girlfriend told me on the phone from the (one) office that after work she had to go back to the down town office because she left her cell phone there earlier in the day.

Because she would be driving pretty much right past my place on the way down town, I texted her to say "Hey, why don't you pick me up on the way, and I'll ride along!"

Later that night she said "I got your text, after I got down town; surely you see the flaw in your question."

I can't remember when I last felt so stupid.