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rh essentially can mean many things..

In this definition, RH means Race Header, an exhaust manifold and is illegal to use on US Public Highways and Roads because of the elimination of a Catalytic Converter, which causes green house gas emissions to enter the atmosphere and cause Global Warming. ..But who cares? :)
Jeremy has a RH on his 4 cylinder vtak.
by magnEsium January 07, 2007
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Rh is short for “right here
Sam- “who wants a tbh?”
Kate- “I want one Rh!”
by Dullower259 October 10, 2017
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Rock Head Syndrome
When someone continuously does stupid shit and doesn’t know that they are being a idiot
Olti “Yo bro deadass how do you do this”
Me “ This is the eighth time you asked how stupid can you be you must have R.H.S”
by Bigcheeseman420 December 17, 2019
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a term invented by bensu2110 and wolff999 to basically express their mental and physical situation of being a hoe.
wolff999: "bro, was geht?"
bens: "nix bro, nbisschen #rh und bei dir?"
wolff999: "bruhhh viel Spaß"
bens: "hi"
by wolff999 February 05, 2019
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