Sircumfriend
An individual who only hangs out with you when it benefits him.
Amir: Yo Gemini is such a faggot he only wants to hang out when he needs a free pass to the gym
Navid: I feel you man, hes such a sircumfriend.

Amir: What?
Navid: You know a sir who cums when they want, when the cirCUMstance benefits them