A relationship where you only come to fuck and get your sexual frustration out with one person only where you also perform many fantasies you both my have
The measurement of lost acreage, diminished elevation, and evaporated real estate property in a homeowner's front (or back) yard due to excessive rainwater runoff, incompetent city utility work, or extensive soil settling over time in an older property.
I would like to give you $100,000 for your home, but the massive fucklimation in the front yard caused your appraisal to come in at $75,000.
A strange relationship when friends of some sort have confusing yet meaningless (yet somehow meaningful) sex numerous times. This situation also allows both parties to have sex with other people with no ones feelings being hurt.
"Holly and Rory have the most confusing fuckilationship ever."
When you and your partner (i.e. same sex, opposite sex) sleep around either together or apart. Both parties are fully aware of the other person's activities.
When you decide to also bring a third party into the relationship and constantly refer to yourselves as "the power of 3" (i.e. Charmed -- cause there's nothing "charming" about that).
Guy #1: Wait, I didn't know that they were ALL together in a relationship? What is that? I mean... how??
Guy #2: That's not a relationship. That's a fucklationship.