magpie bidding

It is the type of bidding, usually for a house, where the first impressions are very good but it's not what you actually want or need. You then knee jerk bid on it before thinking it through. Magpie bidders usually go away and withdraw their bid rapidly after thinking about it in more detail.
"It 'twinkles' I want it, let's bid now!"
Then sometime in the future:
"Don't like it"

It's ok love, don't cry there will be other bidders. They were clearly just Magpie bidding, can't believe they would mess with people's lives like that.