"20/20" means "perfect vision". Eye doctors measure people's vision using two numbers. If the first number is low, your vision is good. If it's high, you aren't able to see well. I have 200/20 vision, so I really need to wear my glasses. But 20/20 is the lowest score and means that you're able to see perfectly. "20/20" is pronounced "twenty twenty".

The grade you got on your history test the other day. As you read this you realize that your mom gets infinite campus notifications.

the number 20

What you call an anxious, homosexual person who does not know what they're doing with their life.

The real age that there is literally zero bits of crap to be excited about! Some say between 12-17 are lame but when you get to 20 you face the consequence.

Someone who likes to leave you on read while smoking weed. But they are the second guy that you have liked with the same name so it's there second chance. But they skate so that's more important than hoco. They say they like you but also like at lot of girls and a lot of girls like them. They have to be a little over confident.