Yeah, i was high whilst working at the newsagents (only been there 4 days lol) and i short changed a guy (i swear i gave him the money). He needed £5 change, i'm sure i gave him £4 of it, and he said "hey that's not enough" so i gave him 2 more pounds, thinking i had given him £6 (only needed 5) and he said "Hey, what are you doing?!" and so i took £1 back (so i thought he had the right change, £5). He then began to give me the money back, and said "Can i just have a £5 note please?" so i gave it to him and he went on his way haha!