Possibly OCD...
Probably only makes sense to those familiar with the a14 cambridge corridor, but...

Once left home (in huntingdon)and headed to cambridge to go to work in the usual fun rush hour traffic. Got on the a14, and the dreadful feeling of 'have I locked the door?' struck me. Sat stationary. Feelings of dread growing. Eventually got to cambridge services and turned round. Rushed home (as quickly as the trafiic would allow). Got home. Door was locked. I was 4 hours late for work.
(animal252 last activated his kitten hammer on, Sat 23 Jul 2011, 14:33, 3 replies)

I think exactly these things every time I leave the house
Only I can't be arsed to go and check them even if I'm convinced I've forgotten something. That includes scary gas/oven thoughts.

I call it Apathetic OCD.
( Yo 'Ho of Charlie mass-market saucetrepreneur, Sat 23 Jul 2011, 14:41, closed)

I do this
and I am familiar with the A14.

It's a sad state of affairs.
(Petite chien is going to do science to it, Sat 23 Jul 2011, 23:47, closed)

Get yourself one of those Yale locks, with the latch.

I know as soon as I close my door it is "locked" (though not deadbolted).
This only becomes a problem if you leave your keys inside.
I had to break into my house once, which involved breaking open and partially dismantling (thank fuck I had my swiss army knife on me) the window frame..
(tyrellsOwl, Mon 25 Jul 2011, 12:31, closed)