I'm fascinated by the many faces of oral sex, especially with regards to BJs. While cunnilingus generally needs to be performed within a certain range of pressures and tempos (I've never heard of aggressive DATY being enjoyable), the cock can take a bit more "abuse" than the delicate ladybits, so more variation is possible. I've found myself pondering the psychology of oral sex.
The mood during fellatio can differ from loving, to sensual, to naughty, to downright nasty. While there's no doubt the giver is responsible for deciding what she is willing to do performance-wise, the receiver also has a hand in setting the tone of the encounter.
For the receiver, there is something innately trusting about exposing the most sensitive parts of your anatomy to another's mouth. The human mouth can be vicious - with teeth designed for ripping and tearing and a bite punctuated by thousands of pounds of pressure - or it can be tender, warm with a soft, supple tongue and full, luscious lips.
For the giver, the act of taking another's genitalia into your mouth implies trust as well, but it also signals acceptance. The giver has a responsibility to treat the cock with care, avoiding the introduction of teeth, and paying heed to the receiver's unique sensitivities. CIM/swallowing confirms a complete commitment to the act. The deep throat - an action most of us would like to perform consistently, but have varied success depending on the size of the cock we are handling - also signifies a total surrender to the receiver.
Thoughts?