Fellatio is an oral sex act involving a person stimulating the penis of another by using the mouth. Oral stimulation of the scrotum may also be termed fellatio, or colloquially as teabagging.
Illustration by Édouard-Henri Avril (1849–1928) depicting fellatio
An illustration of two men performing fellatio on each other in the 69 position
Depiction of fellatio on Attic red-figure kylix, c. 510 BC
Oral sex depicted in the Kama Sutra
Orgasm or sexual climax is the sudden discharge of accumulated sexual excitement during the sexual response cycle, resulting in rhythmic, involuntary muscular contractions in the pelvic region characterized by sexual pleasure. Experienced by males and females, orgasms are controlled by the involuntary or autonomic nervous system. They are usually associated with involuntary actions, including muscular spasms in multiple areas of the body, a general euphoric sensation, and, frequently, body movements and vocalizations. The period after orgasm is typically a relaxing experience, attributed to the release of the neurohormones oxytocin and prolactin as well as endorphins.
Vixen! (1968) by directed by Russ Meyer and starring Erica Gavin.
Jupiter and Juno, by Annibale Carracci