Water sauce is an adjective for something really easy. It is derived from conjoining the terms weak sauce and "water;" weak sauce for the pitiful aspect of the task, and water for the ease.
when your friend named after a batman/stranger things character says that their Bugatticolor is that of your mothers nether regions. it means to be bad
batman sidekick/stranger things character: ya my bugatti is the color of your mothers vagin pink lmao
me:yuo're literal buffalo sauce water
When you have a spaghetti and the water form the noodles create a watery red substance. This happens when the sauce and the wet noodles mix, therefore creating water sauce.
Christa's mom made spaghetti and she had water saucee on her plate.