The term "Like a boss is used in many different ways. Though a very famous youtuber, currently known as Jacksepticeye(or Sean), is mainly known for his gaming videos, green hair, irish accent, and funny content. When he wins a game, or a level, or does something really badass in a game, he will most likely scream, "LIKE A BOSS" In a really lod and funny voice, with his hands up in the air.
"I JUST BEAT THAT LEVEL, LIKE A BOSSSSS"
Do homework like a boss.
Pass a test like a boss.
Finish high school like a boss.
Drink some Mountain Dew like a boss.
Your boss' boss.
My boss-in-law called me to get office to see if I would be get inside spy on my boss.