Spicy potato water is the nickname for Poitín (aka potcheen, poteen or potheen) which is an traditional irishdistilled vodka (40-90% ABV)
((Its to be drank in shots, but can be drank in larger amounts, like which is done at Irish seshs))
The water that hardens the egg softens the potato is a Russian saying that means everyone reacts to stressfulcircumstancesdifferently. It is often used in the context of trauma.
"Rachel's mom just died and a week later she's back to school. Meanwhile, I'm strugling to get out of bed, just because my hamster died. I feel so shitty."
"Dude, don't beat yourself up about it. The water that hardens the egg softens the potato. "