be a huckleberry over (one's) persimmon

dated To be somewhat or slightly beyond one's abilities or talents. Primarily heard in US. I'd like to help you fellas out, but I'm afraid herding cattle is a huckleberry over my persimmon.

Common Names:

Name	Pronounced	Usage
Royce	[rɔis]
Metrophanes	-	Ancient Greek
Baker	['beikə]
Anabelle	AN-ə-bel	English (Modern)
Mukesha	-	Hinduism
Matilda	mə-TIL-də (English), MAH-teel-dah (Finnish)	English, Swedish, Finnish