I'm you huckleberry
What movie was this phrase used in?
See link below.
I received this explanation by email;
Saw your question online and wanted to give you the explanation Val Kilmer states it means: In the old Georgia (where Doc Holiday originated) the men who would bear (carry) your coffin in a funeral procession wore small huckleberry branches in their lapels. They became know as the "Huckle Bearers". When Doc says "I'm your huckleberry" he means that he is your coffin bearer..... or more to the point... he will be the one to PUT you in your coffin. :-)