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1.
A couple who, in the course of planning their wedding, display difficult, selfish, narcissistic behaviour relating to the event.
Peggy Galbraith, “Re: cake... "

"However, I still think a wedding is one of the few times a couple can be completely selfish and think of themselves only. Oh no: couplezilla!"

Z. Santiago, “Re: Cheif Bridesmaid needs help!"
"Then, no they're not wrong at all, they're being a couplezilla. I say: couplezilla go ahead and embrace your zilla-ness. This is the stuff that makes great wedding horror stories..."
by MarieBe January 26, 2013