Possible Clues:

• Other than bums may be contracted in this
• Bid to run off with members
• Bridge bid without a preferred suit
• Play in them may not get to the bottom of them
• A bottomless bid?
• A bid that's not behind there for the bridge
• The bid that doesn't come from behind them?
• Sort of contract that rules out inferior remnants?
• That bid won't get them to the bottom of the bottoms
• It isn't back on the side for a bid