(n.) A sexual realtionship between two or more people in which fellatio is the only form of affection/contact. Usually pejorative, suggests the relationship is lacking.
Term applies mainly to heterosexual relatioships but also acceptable when used in male homosexual context. Not applicable in female/lesbian relationships.
"Susie is so deluded. She thinks Bob likes her but they don't even make out or have sex. She just comes over and blows him. That's not a relationship, that's a fellationship"
Witty play on the term "public relations," describing in no uncertain terms the lengths to which some agents will go in attracting press for their client.
The WSJ article? You can thank our public fellations firm for that.
"Fuck buddies" or two people who are not a couple but still enjoy giving/receiving fellatio to each other. A relationship based solely on blow jobs, not emotion. Can be gay or straight.