In line with the forgetting your SV-2.
This one time, on a Tac-REpo, i walked up to the flight station (after waking up from a coma) and asked the PPC, "Yo, Boss, you ready for me to get in?" He says, "Nah, kick the 3P out, I'll stay in." so that's what we did. I sat down, started buckling in, and the PPC looks at me like i've got a horn growing out of my head and asks, "Uh, XXXXX (name ommited to protect the stupid), do you have ALL your requried equipment?"
Of course our salty ADC FE had been laughing the whole time at me and I didn't even notice.... kinda like that time i ignored the "gear up" horn in the T-34 until the 90...on my checkride.
The moral of this story is: if somone is laughing in the cockpit and it ain't you - ask yourself, "Am I doing something stupid?". And if there's a buzz going off and you're about to land, take a quick gander at that there gear handle, might stop you from making a complete ass of yourself.