Skull fuck refers to vigorous oral sex.
It comes about in an extreme state of excitement. Oral sex can be
very intense – so intense that some people “go crazy.” They
literally want to fuck the giver's mouth. A skull fuck can happen to
anyone, regardless of gender. The key to getting a skull fuck is to
know how to give good head.
More About Skull Fuck
As the term implies, a skull fuck can
be brutal, especially when a huge erect penis is involved. A person
who is not used to deep-throating can find it extremely uncomfortable
to take a vigorously humping penis in the mouth. So, if one is
inclined to skull fuck, it is important to remain conscious of the
sexual partner's comfort. A skull fuck can be extremely enjoyable as
long as the fun goes both ways.