Use this information with care!

In heterosexual relationships, oral sex can be a method of contraception (birth control). Many heterosexuals choose oral sex as an alternative to intercourse for this reason.
There is a third school of thought that believes the word "blow" in blow job indicates the climax of the penis (compare to blowing of a volcano).
Depending on the preference of the teen blow job participants, this stimulation may produce an orgasm and ejaculation of semen.
Some males regard receiving street blow job as an ego boost, believing that such an act is a form of dominance over their sexual partner.
Brutal blow job, if carried to orgasm, allows the giving party to take the resulting ejaculate directly down the throat and into the stomach.
Many women who are situationally anorgasmic can only achieve orgasm through oral sex, and so they often prefer it instead of or in addition to sexual intercourse.