In a bad skin; out of temper, in an ill humour. Thin-skinned: touchy, peevish.
Definition taken from The 1811 Dictionary of the Vulgar Tongue, originally by Francis Grose.
Skewvow * Skin-1Nathan Bailey's 1736 Dictionary of canting and thieving slang
John S. Farmer's collection of canting songs and slang rhymes