Smile Water 

Payment for a bottle of water or food while standing in line waiting to vote. Sales of water & food are in kind for a smile.

It was hot standing in line for 8 hours waiting to vote, but thankfully a nice woman sold me a bottle of smile water.

Smile Water by ANW2 March 26, 2021

water cooler smile

A forced smile. The water cooler is stereotypically the place in the office where people gather to make small talk. Given the fact that most people hate their coworkers or just don’t want to be around them, you're left with the water cooler smile.

Oh my god Tracy, look at how bad my grad photos turned out!

"Oh man, that water cooler smile tho!"

water cooler smile by hecking log November 17, 2017

Super Idol's smile is not as sweet as your sweet August noon sun is not as dazzling as you love 105 °C you dripping pure distilled water 

When you put the Super Idol lyrics to English using the Google translate.
Then you're probably as twice as bored.

Super Idol's smile is not as sweet as your sweet August noon sun is not as dazzling as you love 105 °C you dripping pure distilled water

Super Idol's smile is not as sweet as your sweet August noon sun is not as dazzling as you love 105 °C you dripping pure distilled water by dgfhgfdcghghfgghhhgggghhhhhhhh March 9, 2022

watery smile 

A watery smile is when someone’s smile is weak and not really a smile. It’s just an action to show no emotion or hurt. Also known as a sad smile

She gave him a watery smile.

watery smile by anonymous.freebird June 25, 2018

Waterfall smile 

A smile denoting pure bliss and an overflow of happiness and emotion. Often refers to intense happiness related to love for another.

She walked away, looking back with a waterfall smile.

Waterfall smile by Callas December 12, 2018