system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why a water faucet 'spits' after it has not been used for a while?
gpt
Pockets of air. All of the pressure from water being turned on "pushes" residual and new water out. You have air and water coming out instead of a steady stream of water. Its like putting water in your mouth and blowing it out. The air pressure from the lungs make it misty or like spitting. Having water pressure push out other water gives you that steady stream like a hose.