1. A compliment, meaning you have large amounts of
oxygen, therefore having more
brainpower.
2. An insult, meaning you have lots of
oxygen in your head, and very little
brain.
The big can also be replaced with other words describing size, such as massive or huge.
Good luck figuring out which.
Def 1: Dude, he just aced the test. Must have big oxygen levels.
Def 2: Wow, you play Fortnite? You have MASSIVE oxygen levels.
