Punishment for failing to answer a feat of strength when challenged by another man (generally at a bachelor party or other like event).

The coward is required to take three bull-rider shots in a row (the cotillion).
Peter challenged Ross to an arm wrestling contest and Ross was scared he would lose so he rejected the challenge.

Ross is thus a coward and is required to complete the coward's cotillion as restitution for his cowardice.
by BigVR June 3, 2009
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