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1. Canadian Standoff
A situation in which both parties are too nice to let themselves win at the other's expense. The opposite of a Mexican standoff.

For example, if two Canadians arrive simultaneously at a narrow doorway, each is likely to stand aside and invite the other to cross first, and so on, until they both give up, set up camp for the winter, and offer each other a beer.
When we were watching the game last night, my buddy and I got ourselves into a real Canadian standoff over the last slice of bacon pizza. It just ended up going cold.
2. Canadian Standoff
Occurs when two individuals cross paths and each politely suggests that the other may go first.
Man: Oh sorry
Woman: It's ok, go ahead
Man: After you.
Woman: I insist.
Man: Thank you.

A Canadian Standoff.
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