Technically there can be two meanings, a garner can be someone who is mentally lost in a mystical realm. This person loves wizards, fairys and goblins. A garner can also be very dumb. This person is cocky and thinks they know everything. They lose every argument they EVER get into, has little to no knowledge about sports.
Hey look a new lord of the rings is out, I bet garner will be first row.

Hey what's that guys deal he is horrible at life, he is a garner give him a break
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A Garner is a person who acts like a little bitch. As a kid, a Garner can be heard shouting "I'm telling!" at any injustice or breaking of a rule. As an adult, a Garner is still a liltle bitch. They often tattle tale and avoid confrontation with other adults.

A Garner tends to think of themselves as above others and expects the world to cater to them. This, of course, is because they are more intelligent than everyone. A Garner will be the first to tell you how wonderful they are.
"He's a real Garner, ran right to the boss to tattle but didn't talk to me. "
"She's a Garner, you have to do it her way because she thinks she knows everything."
by Uratroll September 23, 2020
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To go on long rants about communism.
"my grandpa has used many garnerisms in his day."
by The romancer February 25, 2014
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In the workplace, banter can be the only solace or break from the daily grind, so impromptu segways to one-liners or quick wit can relieve the mental strain that grafting brings. However, when it comes to humour, they'll always be someone who'll throw in a "Garner", differing from a Dad joke, a Garner remains topical but elicits the same wince, stifled groans and eye roll. On occasion, a Garner may also be followed by the dreaded "ba dum chhh".

Any more Garners from you and you're out of the group.
by XhakaKhan5647 March 12, 2019
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A twentysomething who abruptly becomes unnaturally conservative for their age.

The term derives from the Australian title ('Suddenly 30') for the Jennifer Garner film '13 Going On 30'.
She's become a real garner lately; don't expect to see her out on a weeknight.
by Jonomatopoeia February 28, 2008
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A very sexy man with lots of girlfriends and lots of fortnite wins. Everybody loves him and he is very epic. He has a very plump booty that people love to touch. He is the funniest guy you will ever meet and 6ix9ine is his uncle who hooks him up with lots of v- bucks and gives him hot ladies. All the girls at his school want to kiss him. His snapchat is @garnerberry and his instagram is @garnerberry_
kylie jenner: hey did you see that sexy man over there who is also cool and epic?
Sommer ray: yes, thats my boyfriend he is such a Garner Berry.
by sommer ray official November 26, 2018
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