[ansel12]

Without question it is huckleberry.

The script also verifies it.

Here is Val Kilmer in 2014-I say both “I’m your huckleberry” AND “I’ll be your huckleberry...” I say it twice in the film.
https://x.com/valkilmer/status/534542290841112576

Historically it is huckleberry and has been used since the 1800s and in old TV shows of the 50s and 60s.

[TexasGunLover]

Without question it is huckleberry

Without question it is huckle bearer. Huckleberry is nonsensical per Webster's dictionary.

[wintertime]

thank you.