water tester 

jackass dudes that screw over a chick, then once she has another man, send her random texts every other month or so to test the waters

My girl and I were enjoying a nice romantic dinner until her phone was lit up by a water tester

water tester by MadDog09 June 20, 2009

Water Break Tester 

A water break tester is an individual (usually black) who has dirty, greasy, or otherwise gross hands which ruin the surface of an aluminum part or panel that is having the water break test conducted upon it.

These fuckin' water break tester's are stinking up the classroom.

Water Break Tester by Mike Osowski October 23, 2022