Two men and two women have intercourse simultaneously in the 'doggy style' position. The woman face one another so that they can engage in kissing, fondling, etc. By putting men back-to-back, an chain can be creating reminiscent of the handicraft 'boondoggle'.
(v) "Charlotte, Angela, Ray and I poondoggled last night."
(n) "Hey Charlotte! Hey Angela! You are cordially invited to a poondoggle on Saturday night hosted by Ray and me."
Using corporate funds to visit a client that you really don't need to see. The real reason for visiting the client is to explore the area, visit a friend, try the food scene, or some other personal reason not associated with work. Your boss is unaware of your true motive and believes you are actually conducting work.
Salesperson 1: "Jim is going to Hawaii to visit his client next week."
Salesperson 2: "Bullshit. Jim's client there is tiny. That's just a boondoggle so he can surf all week. I bet he only goes to the office once."