sit and swivel
Usually used in conjunction with the well-known middle finger. It literally means "sit and swivel". It is synomomnousy with kiss my arse, or suck my cock.
S: What happened to my sandwich?
J: I don't know.
S: I will make it, don't worry...
J: Can you make me one please?
S: (with the middle finger up) Sit and swivel
J: Egg please!
J: I don't know.
S: I will make it, don't worry...
J: Can you make me one please?
S: (with the middle finger up) Sit and swivel
J: Egg please!