huckleberry

"Huckleberry" was commonly used in the 1800's in conjunction with "persimmon" as a small unit of measure. "I'm a huckleberry over your persimmon" meant "I'm just a bit better than you." As a result, "huckleberry" came to denote idiomatically two things. First, it denoted a small unit of measure, a "tad," as it were, and a person who was a huckleberry could be a small, unimportant person--usually expressed ironically in mock self-depreciation. The second and more common usage came to mean, in the words of the "Dictionary of American Slang: Second Supplemented Edition" (Crowell, 1975):

"A man; specif., the exact kind of man needed for a particular purpose. 1936: "Well, I'm your huckleberry, Mr. Haney." Tully, "Bruiser," 37. Since 1880, archaic.

The "Historical Dictionary of American Slang" which is a multivolume work, has about a third of a column of citations documenting this meaning all through the latter 19th century.

So "I'm your huckleberry" means "I'm just the man you're looking for!"

what once started as just a fuck buddy but turned into the best sex you ever had so he's/she's a keeper AKA huckleberry !!

an ignorant country person, a bumpkin, a rube, someone ripe for the picking. When you encounter one on the road you say, hi Huck. Hence the name of Twain's character.

Means a backwoods, six toed, inbred yankee who was denied admittance to the American south.

An person who, owing to weakness other inferiority, is forced to become another person's bitch.

A fish or non-professional in a poker game.

Means a backwoods, six toed, inbred hillbilly from the American south.