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When receiving oral sex taking the headrest off of a car seat and placing it between your legs for the comfort of the partner
She said she was getting a cramp so i gave her a headrest.
by dankxplosion January 14, 2011
When receiving oral stimulation, said receiver falls asleep.
Berta gave me an amazing Head Rest last weekend.
by V Cogs August 31, 2010
Someone or something that interferes and prevents another person from having sex; cockblock
Creepy Uncle Morty was such a Head Rest last night!
by KLCarson84 March 22, 2010