this is a drug, slag from heroin and it is an add on from the common word 'brown'
...cant tink of an example for horse is brown
by p_lo September 16, 2006
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When a man takes a shit, and does not wipe or clean up, then another person eats out the man's asshole and eats or chews the his anus hairs, like a horse eating hay.
Ben took a shit without wiping and Eric ate his asshole out and munched on his ass hairs like the Horse and Brown Hay.
by IamBlinxi October 1, 2009
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