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It is important to note that oral sexual activities are not effective methods of preventing sexually transmitted diseases (STDs).
The common slang term blow job is a misnomer, as blowing is not normally part of fellatio.
Very efficient technique of teen blow job is to have the penis head go in and out of the mouth very quickly (without going down to the shaft).
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.
Some heterosexual couples use fellatio as a substitute for intercourse during a woman's menstrual cycle or pregnancy.