Duck Season! Rabbit Season!/Playing With

Basic Trope: Two characters are in an argument that effectively deteriorates to "Yes!" and "No!". Someone switches sides, and the switcher invariably wins.
 * Straight: The character who switches sides wins, generally making the other one look stupid.
 * Exaggerated: This trope is applied to a more complicated argument.
 * Justified: The character who doesn't switch sides is an idiot.
 * Inverted: The person who switches sides loses.
 * Subverted: The non-switcher plays along but switches it at the last moment. "You really didn't think that was going to work, did you?"
 * Double Subverted: The non-switcher switches at the last moment, but the non-switcher catches on and flips it back. "Yep, I did."
 * Parodied: Alice and Bob argue about having children or not. Bob doesn't want, but Alice switches side and he too. So Bob gets pregnant, to Alice's greatest confusion.
 * Deconstructed: The trope is so widely abused, that switching sides is forbidden. People must sign a statement of intentions before any discussion.
 * Reconstructed: They wind up pulling the routine over whether or not they properly signed the statement of intentions.
 * Zig Zagged: See Double Subverted-- rinse and repeat as necessary.
 * Averted: The argument is more complicated/nobody switches sides.
 * Enforced: "Let's show how crafty Alice can be, and how gullible Bob is!"
 * Lampshaded: After Alice switches her argument, Bob remarks "Why does that always work?"
 * Invoked: Alice knows that Bob is easily manipulated, and thus switches her argument, knowing it'll cause her to win.
 * Defied: Each person delivers his statement once and only once, and if Bob tries to prolong the argument Alice keeps her mouth shut.
 * Discussed: "It seems like when people switch sides of the argument, they always win! Why does it almost never work like that?"
 * Conversed: "This is a pretty pointless argument. Whenever someone swaps sides, they win. Kinda like politics."

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