We use cookies to optimize site functionality and give you the best possible experience. Learn more Ok. Subscribe to your favourite Pornstars and get automatic updates! A blowjob is an oral sex act performed on a penis involving the use of the mouth lips and tongue and including the throat. Also known as a BJ, fellatio, "giving head", "sucking off", or a hummer, this activity can be arousing to both parties involved and can culminate in an orgasm for the person being fellated.