"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!"
by kilo February 23, 2005
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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 !!
i met up with a guy off the internet for sex but it turned out to be great SEX he's now my huckleberry !! I WANT TO MARRY HIM !!
by H2THEIZO August 21, 2009
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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.
In the movie Tombstone when Doc says, I'm your huckleberry, he means I'm your fool, someone to be taken advantage of.
by Mockingword July 12, 2009
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Means a backwoods, six toed, inbred yankee who was denied admittance to the American south.
Stay upwind of the stinking huckleberry idiot(s) from New York.
by Zarkon September 10, 2010
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An person who, owing to weakness other inferiority, is forced to become another person's bitch.
Next time Craig talks shit to me, I'm going to beat his little ass and make him my huckleberry.
by MarRob February 6, 2009
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A fish or non-professional in a poker game.
The huckleberry in the three seat is down 3 g notes.
by Master Ro April 14, 2005
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Means a backwoods, six toed, inbred hillbilly from the American south.
by Evil name caller August 30, 2005
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