Optical Blow Job
Fantasy/delusion in which a dude tricks himself into believing that the sexy gal in the room (or on the train or at the beach, and so on) is fellating him with her eyes

Occasional blow job- A blow job that one gives occasionally, used when it is not a big deal.

Obligatory Blow Job. The act of going down on one's male partner, either because he just went down on you and you owe him one, or because you don't want to bone him yet.

To make a woman an object for recreational purposes. Involves feeling up, taking advantage and possibly a cock slapping.

Obligatory joke

in the usenet forum rec.humor posters who wished to talk about off topic information were required to add an obligatory joke. They prefaced this with the acronym OBJ.

Stands for outstanding blow job. Given to a man because it was well deserved. Usually because he has done something spectacular. Also given until the recipient has achieved an orgasm. If bj's are given as part of foreplay, they usually aren't completed. Obj's are necessary every now and then.

A term/abbreviation used when talking about the Objective, usually in a video game but also applicable to real life. Spoken as O-B-J.