Sarcastic reference to people especially politicians, journo's, pundits etc who profess to great wisdom and use college words to show how smart they and how dumb the rest of us are.
Listened to some big brained nibba on the TV last night explaining that boys are better at Physics cos they have willies and are used to handling the fluid dynamics of their urine. Tosser
by FashyKen October 5, 2017
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A person that Has said or done something go really smart
Omg we can save the cat by calling the firefighters said billy bobby replied omg yeah. Billy said haha I have big brain
by BiggieBrainy September 12, 2020
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Parens: Your so smart
My brain: Big brain
by Geometrydash667 February 10, 2020
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A saying only big pp boys say because their brain has been enlarged by the big pp information
Me: 2+2=22
Also me:
BIG BRAIN!!!
by Jospeh Mother October 28, 2019
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person 1: what tree do think cheese comes from

person 2: this is big brain time
by markdivider November 3, 2020
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