If someone gives you something like a cookie you can say chines or chines thank you. Or if you give someone something and they saythank you you say chines.
In the act of sexual intercorse, then you take your penis out... take a few steps back.. then sprint at full force towards the girl. Jumping in the air to insert your penis back into the anal or vaginal cavity. This obscure method if done right will cause a powerful orgasm for both partners
Oh oh oh oh!!!! * begins chines goodbye*
Them:"Wtf are you doing?"
You:"GOOOOOODBYYYYYYEEE!!!!!!"
*proceeds with the ending of the goodbye"
Both: HOLY FUCKING SHIT!!!!!!!!!!!!!!!!!!