Chinking

[Rihanna]

A side-effect of cannabis use that causes the muscles of ones [eyelids] to become relaxed and slightly closed to take on the appearance of someone from Asian - or chink - descent.
A similar side-effect sometimes called red-eye can also occur if a user is a new smoker or just smokes a lot. This is caused from [dilation] of the capillary [veins] within the eyes.

[Justin Bieber]

present participle of chink