The act of pleasuring your partner sexually with little to no reciprocation. All attention and pleasure is devoted to the person being serviced, as opposed to it being more of a give/take situation. This term is more common in the LGBT community, and is often favored by more submissive partners who enjoy pleasuring others more than receiving.
Are you into servicing? I'd love to give you a massage, go down on you, and whatever else you want.
v. Also, service the account, the account is being serviced.
A George Carlin term for the act of a salesperson screwing over their customer through deceit. This is catagorized by the large bullshit smile, and customer assuming the position.
"Excuse me, I'm clueless about buying absolutely anything."
"I'll just go ahead and service the account for you then."