above (one's) head

Being too advanced or difficult for one to be able to comprehend, understand, or complete; beyond one's abilities. I thought I could handle this advanced math class, but the stuff we're learning is just way above my head.

Common Names:

Name	Pronounced	Usage
Blanton	['blæntən]
Shadrach	SHAD-rak (English), SHAY-drak (English)	Biblical
Graeme	GRAY-əm, GRAM	Scottish, English (Rare)
Arabinda	-	Bengali, Indian, Odia
KĘStutis	-	Lithuanian
Bairre	-	Irish