The hukni is an old Gypsy trick - here's how it works:
The Gypsy makes some poor simpleton of a lady believe that if the latter puts her gold into her hands, and she makes it up into a parcel, and puts it between the lady's feather-bed and mattress, it will at the end of a month be multiplied a hundredfold, provided the lady does not look at it during all that time. On receiving the money she makes it up into a brown paper parcel, which she seals with wax, turns herself repeatedly round, squints, and spits, and then puts between the feather-bed and mattress - not the parcel of gold, but one exactly like it, which she has prepared beforehand, containing old halfpence, farthings, and the like; then, after cautioning the lady by no means to undo the parcel before the stated time, she takes her departure singing to herself:
O dear me! O dear me!
What dinnelies these gorgies be.
The above artifice is called by the English Gypsies the hukni, and by the Spanish hokhano baro, or the great lie. Hukni and hokano were originally one and the same word; the root seems to be the Sanscrit huhanã, lie, trick, deceit.
From: Romano Lavo-Lil