I caught myself saying No Sorry Wrong to several people over the course of the work day yesterday.
Well that and I am constantly learning new phrases from my co-worker ... for example to describe someone who has really spoined a good situation, according to Nat, they have thrown a turd in the punchbowl.
I was chatting with a friend last night, and he said he was too old for me to be keeping him up so late (I made him oversleep once and be late for work...my bad!), and he kept telling me he had to go to bed. So I just kept saying "No sorry wrong" after everything he said, and he finally just logged off.