v. When the female uses her head/skull and rubs, pushes against, or repeatedly bumps her head on the males penis and she does not use her face or mouth.
2.) To have someone gag on your sausage
"he'll have to give one to get it"
It was a mistake to give John Howard a headjob
"Damn nappy-headed hippies backpacking Thailand -- didn't someone tell them they can buy a headjob for 40 baht?"