I don't think anyone is laughing at you. We are laughing at ourselves as we have all been there too. I would venture to say that most, if not all of us have forgotten some critical item needed for flying such as a plane, wing, starter, fuel, pump, transmitter, etc... The other day I got to work and realized I left my laptop on the kitchen counter. Turned aroud ran back home and got it. Got back to the office only to find that in the process of getting my computer I managed to then leave my cell phone on the counter.