going to china 

Going down on a girl then mid way through turning her around and eating out her butt

I not only ate her out but going to China with that girl last night.

going to china by M_n_m September 20, 2015

Going down to China town 

a famous quote from the China town film, also refers to the extent to which you are going to take them down a peg or two, generally assuming that chinatown is far away.

You're in so much trouble,

yeah so
you're going down,

i've been down before
i'm taking going down to china town
oh

Going down to China town by jaffaw July 16, 2009