RHS Share definition Flag RHS better known as Random Hardness Syndrome is a syndrome where one (usually a male) gets hard at any random time during day. There is sadly no cure..... Male 1: "Bro I heard Carl got RHS in front of his crush."Male 2: "Damm that's crazy." RHS by Toki Uz March 30, 2024 0 0 Get merch Get the RHS mug. Buy Now — $32.95 See more merch