Superlative qualifier added to a childish argument in hopes of eliminating any potential for a further retort (of course, anyone who's been involved in a childish argument knows that you can just add

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TIMESINFINITY

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Possible rebuttal in a childish argument
Retort in a playground argument
Childish retort
Childish retort to "Are not!"
Schoolyard argument retort
Childish proposal to a potential playmate
Argument forestaller
Like a weak argument
Doesn't continue, as an argument
Argument-ending words
Ongoing argument
Childish fit
Informal fallacy used in an argument
"Because __": parent's argument ender
Childish way to present your job application
Lovers' discussion (it's not an argument)
Convincing, as an argument
Having an argument
Childish pouts
Old-fashioned argument enders
Problems with an argument
Controversial argument
Deceptive argument
Argument's foundation
1998 movie with a "Dude!" argument