above/over somebody's head

above (someone's) head

Not understood by one because it is too complex or subtle for their comprehension. My jokes always seem to go above Stephanie's head, so I'm glad you think I'm funny at least.
See also: above, head

over (someone's) head

1. Describing the act of speaking to one's superior rather than talking to one directly. She just wouldn't listen to me, so I had to go over her head to her boss and complain about it.
2. Not understood by one because it is too complex or subtle for their comprehension. My jokes always seem to go over Stephanie's head, so I'm glad you think I'm funny at least.
See also: head, over

*over someone's head

 
1. Fig. [of the intellectual content of something] too difficult for someone to understand. (*Typically: be ~; go ~; pass ~.) All that talk about computers went over my head. I hope my lecture didn't go over the students'heads.
2. and *over someone; *above someone Fig. to an authority higher than someone. (*Typically: be ~; go ~.) I don't want to have to go over your head, but I will if necessary. I had to go over Fran to get it done. My boss wouldn't listen to my complaint, so I went above her.
See also: head, over

above/over somebody’s ˈhead

too difficult for somebody to understand: It was clear from the expression on his face that the lecture went completely over his head.
See also: above, head, over

over somebody’s ˈhead

to a higher position of authority than somebody: He gets angry when you go over his head and talk to his boss.
See also: head, over