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Noun, indicating a situation in which a person is actively engaged in schoolwork whilst receiving a blowjob from another person more interested in physical gratification than scholarly pursuits. It is a psychologically similar phenomenon to road head.
"Oh, yeah, my professor loved my reading response, even though I wrote it during homework head."

"Listen, I know you have a lot of work to do... but how about some homework head?"
by A Kaiser September 16, 2006