Fellatio (also known as fellation, and in slang as blowjob, BJ, giving head, or sucking off) is an oral sex act involving the use of the mouth or throat, which is usually performed by a person on the penis of another person. If performed on oneself, the act is called autofellatio. Oral stimulation of the scrotum may also be termed fellatio, or colloquially as teabagging.
Fellatio can be sexually arousing for both participants, and may lead to orgasm for the receiving partner. It may be performed by a sexual partner as foreplay before other sexual activities (such as vaginal or anal intercourse), or as an erotic and physically intimate act in its own right. Like most forms of sexual activity, oral sex creates a risk of contracting sexually transmitted infections (STIs/STDs). However, the transmission risk for oral sex, especially HIVtransmission, is significantly lower than for vaginal or anal sex.
Most countries do not have laws that ban the practice of oral sex, though some cultures may consider it taboo. People may also have negative feelings or sexual inhibitions about giving or receiving oral sex; they may refuse to engage in it of their own volition. Commonly, people do not regard forms of oral sex as affecting the virginity of either partner, though opinions on the matter vary.