A cough with a degree of phlegm, but not "phlegmy" per say. Can also be used in the context of saying something with a hoarse, sick-sounding voice.
"Since having this head cold, I've started sounding really garthy."
by NewLinguistic2k16 October 02, 2018
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a small boy who has a sexual relationship with his dad, As well as a constant urge to get any acknowledgement from other people as a source of pleasure
that boy is a garthi
by Big Allar 69 May 17, 2021
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A point that is awarded for cockish one-up-manship, named for an infamous bullshitter.
Paul: I just saw a snail in the garden!

Jake: Well I saw a pigeon, three foxes, a dog and Father Christmas in the garden, and Santa had his dick out!

Paul: Fuck off Paul, have a Garthy point!
by Sue de-Nym June 07, 2014
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