waterstuff

Etymology 1
From.

Noun

 * 1) Things containing, associated with, or involving water.
 * 2) * 2006, Belle de Jour: Diary of an Unlikely Call Girl:
 * [...] title and another mag with a tasty bob-haired girl doing the waterstuff all over some poor boy who no doubt deserves it. Will let you know if anything interesting, er, goes down.
 * [...] title and another mag with a tasty bob-haired girl doing the waterstuff all over some poor boy who no doubt deserves it. Will let you know if anything interesting, er, goes down.

Etymology 2
From. or 🇨🇬.

Noun

 * 1)  hydrogen.
 * 2) * 1887, Jas. Swinburne, “Theory of Secondary Cells” (letter to the editor), The Electrical Journal, Volume 18, p. 482:
 * This is approximately the heat of exploding what the Germans call bang-gas (mixture of sourstuff and waterstuff), the result being liquid.
 * 1) * 1989, James Binney, “Stellar Dynamics”, in Immo Appenzeller, Harm Jan Habing, Pierre Léna (eds.), Evolution of galaxies: astronomical observations:
 * One day Gröninger, a brilliant young Homoeoid physicist then just at the end of his first year as a graduate student, became convinced that the frequencies of lines in the spectrum of waterstuff are differences between the frequencies [...]