MP, best hand South
I felt that I was bidding straight down the middle GIBberish for a change on this one.
A possible exception is my 3C bid, which may have shown extras, but unfortunately the server declined to attach meanings to my bids on this occasion.
North's double promised a 5th Club, which he did not have, instead preferring to hold a 3rd Diamond that the double denies.
North is also two full HCP short of the values promised for the double.
One card off-shape I can understand, or 1 HCP adrift, but one card offshape AND 2 HCP adrift??
On the strength of expecting a 5th club opposite, I could not resist the tempation to pop in a cheeky 3C bid, and I think it sensible that this should be allowed within the system.
And finally, while I still have a chance to bid over 4H, he butts in with 5C??? What does he think that he and I have already shown up to that point?

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ing) tr. v. - Any bid made by bridge player with which partner disagrees.