The last time I shot really badly was the Sunday morning of last year's Trafalgar - I blamed the bad light, the damp, and moving my front sight the wrong way...but it was the Sergeant's Mess's fault for stocking so many fine whiskeys
You could have husband and wife T-shirts...the blokes saying "her rear bag's gone saggy", with an arrow to the missus...and hers with "He's shooting blanks" pointing back... razz
This actually happened in South Africa. As the frog progressed ever closer to critical areas Mick Silver got, sequentially, an inner, a magpie, an outer and worried (was it a snake?). He was then seen to invent a new drill movement - the "retire from the firing point while hopping with trousers round ankles".
My first rifle club (Central London Poly) had sweatshirts made for everyone with crossed rifles, a mortar board, a pint of beer and "Mandatum VII" proudly underneath. We all wore them proudly all year without asking what it actually meant (and I did Latin at school).
It means Message 7 - the one when you've missed - and none of us spotted it
The bloke who designed them later admitted he did it because we were all s*** shooters and thought we'd need to use it a lot!