The delicate
act of separating the jaw from a decapitated head (taking care to keep the
tongue in tact) and then proceeding to "fuck" the esophagus; therefore fucking
just the skull.
"I went to the cemetery last week and found an excellent skullfuck!"
"
The best time for a
proper skullfuck is when the
hole has been aged for about 15-25 years of age."
"She looks like premium skullfuck material."