B&Q's (diy.com) 8:40am
Me: "Can you move out the way love so I can scan these items."
Wife: "I need to watch you with these you can never seem to work them!"
Three items in.
Me: "Bubb what are you doing? Don't touch anything, you can't pick anything up till I've finished!"
Wife: "Don't talk rubbish."
Beep Beep Beep
[PLEASE WAIT FOR AN ASSISTANT! ITEM REMOVED FROM BAGGING AREA!]
Me: "I told you not to touch it."
A minute or so later the misses fed the machine with £20 notes.
Me: "Bubb where you going?"
Wife: "Tsk I have my change."
Me: "Wait for your notes out the bottom."
Out popped a £5 note, seems I do know how to work them? :-D