Teardrop
A tsunami goes through a little door, and plops down a big drop on your face. This tsunami is your tears inside your eye area. The door is your tear duct. The big drop is the teardrop coming down your eye.
Imagine a teardrop going through this process to get out of your eye, though in a more miniature teardrop size.
るい
なみだ
None
Your teardrops are like little waves. What are they? They're 波だ (なみだ).
Feel each teardrop rolling like a little wave down your cheek. You've never paid such close attention to them before. Teardrops really are just 波だ, you think. Little, ticklish waves.