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1.
20 layers can be interpreted as

1) Formal Someone overdressing/having too much on

2) Slang Putting on an acceptable amount of clothing for cold weather
1) "You'd think it was cold, look at him with his 20 layers,

2) "It was bare blitz so I bust out 20 layers, you get me fam?"
by Gandalfia October 25, 2013