system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: when we accidentally breath in water, how does the body remove that water from the lungs?
gpt
Most of it: cough it out!

What's left of that: the lungs have a microscopic conveyer belt called "cilia" that can bring some up (probably mixed with mucous, probably still coughing it up too) 

What's left after that: can be absorbed. Pee it out eventually.