He has so hot a stomach, that he burns all the clothes off his back; said of one who pawns his clothes to purchase liquor.
Definition taken from The 1811 Dictionary of the Vulgar Tongue, originally by Francis Grose.
Hot Pot * House To LetNathan Bailey's 1736 Dictionary of canting and thieving slang
John S. Farmer's collection of canting songs and slang rhymes