A nonsensical way to express the idea that it's easy to see what the right course of action was, when the dust has settled.

20/20 vision is 50th percentile, average. It's mediocre. It means you can see at 20 feet what the average, middle-of-the-line person can see at 20 feet. Hindsight (perfect deduction) is the opposite of that. It's flawless. Properly expressed, to make any sense and actually convey the intended meaning, it would be "Hindsight is 20/0".

Stop saying this nonsense bullshit.
by conor147cfc December 30, 2017
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20/20 Vision is when you take someone's nipples (preferably a girl) and align them so you can stick both of them onto your eyeballs. Thus having 20/20 vision of their tits.
Hey dude, I totally had 20/20 vision of Maria last night after the party.
by mootles24 November 2, 2013
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an alcoholic beverage for pre-teens and toddlers; a drink you enjoy before you can walk or fight.
I saw a bunch of pre-teens drinking md 20/20. They were pre-teens. By that i meant they did not yet know what puberty was.
by Rudolf Schmitt December 29, 2010
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1) a rare phenomenon that happens when a person wakes up and can see perfectly without the aid of glasses/contacts

2) a youtube channel that tricked half the population into thinking that they could predict celebrities deaths.
1) person 1: yeah i have 20-20 vision!

person 2: dude…you’re incredible!

2) person 1: hey have u seen that channel that predicts the future? it’s called 20-20 vision!

person 2: um…who’s gonna tell him
by lmaoig April 13, 2022
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AKA Mad dogg.Highly flammable liqour usually consumed via the eye ball
Terry get our shazza to eyeball that mad dogg
by anon March 31, 2004
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