“I’m your huckleberry”
Had to look that one up.
http://en.wikipedia.org/wiki/Huckleberry
Use in slang
Huckleberries hold a place in archaic American English slang. The tiny size of the berries led to their use as a way of referring to something small, often affectionately as in the lyrics of Moon River. The phrase “a huckleberry over my persimmon” was used to mean “a bit beyond my abilities”. “I’m your huckleberry” is a way of saying that one is just the right person for a given job.[7] The range of slang meanings of huckleberry in the 19th century was fairly large, also referring to significant persons or nice persons.
“That’s just my game.”