Mr Z's right.
Recently I borrowed Mr T's camera bag when I went to Ricard. I put one of my credit cards in it. When I got home, I forgot I'd done this, then suddenly twigged where I'd put it.
Me :"Can you look in the little zip pocket inside your camera bag? - I think I left a card in it."
Him : "Nope. Not there."
Spend two hours tearing house apart, and searching luggage, linen basket, cupboards, car....
Me : "Can you look again? - I'm sure that's where I left it."
Him : "Don't you think I looked properly the first time?" Sighs and toddles off for another look. "Nope. Not there."
Spend another two hours searching house, including ripping up the floorboards, searching the contents of the dustbin, and stripping the car down trying to find it.
Me : "Can you give me your camera bag please? It's not that I don't believe you, I just want to satisfy myself that it's really not there."
Him : "Humph. Don't you trust me?"
Grudgingly gives me camera bag. Whereupon, I open the front, unzip the little pocket and there is my credit card.
Him : "Oh, I didn't even know there was a pocket there."