The term Gilby originated in South Carolina when a red neck man by the name of Gilby made himself famous by creating the world's most alcoholic moonshine. This moonshine was so alcoholic that it had to be sniffed from the end of a match submerged only a tiny amount into it without breathing in or sniffing any of the large amounts of fumes it would create. Unfortunately, on trying this, Gilby was drunk and he ended up sniffing just one tiny bit of the fumes, resulting in his death.

An alcoholic (or someone who has harmed them self from excessive alcohol consumption) is called a Gilby because of this
Jesus, look a that cunt throwing up everywhere

He's being such a Gilby ...
by Hans Gliedermaus June 10, 2004
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A form of Male masturbation, where the penis is taken between thumb and fore-finger and ground back and forth to orgasm. Practiced by those with unbelievable shrunken genitals. See also Micropenis.
Man 1: Where's he gone?
Man 2: Under the stairs, he's having a Gilby Twist
by Haroldsonson February 4, 2010
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Used as an expression during any duration of awkwardness that exposes one to an uncomfortable situation
"Seriously though....Nice Gilby"
by Anonymous_Swag November 23, 2011
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An expression used when gilby gets awkward.
"Seriously.....Nice Gilby"
by Anonymous_Swag November 23, 2011
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Gilby Clarke is best known as the rhythm guitarist in Guns N Roses, after Izzy Stradlin left, and before Axl kicked him out. Gilby went on to have a solo career. He also formed the band Rock Star Supernova. Though it's not as good as his other work, there's no reason to hate him.
Gilby Clarke is actually a good friend of Izzy. If liking Gilby is bad, shoot me.
by Ret Voltage June 16, 2007
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