Standard for any British military crew room the world over is the silly comments book. Little 'gems' such as:
Sgt to Airman:
'Hey...I hear you had a little 'accident' whilst driving back to camp at the weekend?'
Airman:
'Yeah Sarge...but I would have been just fine if that bloke hadn't rammed me up my arse in my car yesterday!'
and...
'Hey...what are those two legged tripod things doing over there in that flowerbed?'
or...
'Chief...Are you sure it's just the one lot of 'fallopian tubing' you want me to pick-up from over at the Med Centre?'
You get the idea...all contributions are very welcome.