be a huckleberry above (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 above my persimmon.

Common Names:

Name	Pronounced	Usage
Phoibe	-	Greek Mythology, Ancient Greek, Biblical Greek
MatouŠ	-	Czech
Jaime (1)	HIE-me (Spanish), ZHIEM (Portuguese)	Spanish, Portuguese
Derby	DAHR-bee, DUR-bee	English (Rare)
Richard	['ritʃəd]
Lysimachus	-	Ancient Greek (Latinized)