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1.
Getting high and having fun
"Drink up, let's get hancai!"
"Wanna come over my place to hancai tonight?"
by hancaiboy March 24, 2013
 
2.
Han-ca-i
Verb I or T
to gather with the intent of sexual, alcholic or mischief

Noun C
a social event where a group of people meet for alcohol and sexual intercourse is involve, with discardment of social obligations and worries.
Do you wanna hancai tonight?
Anybody wants to hancai?
Let's hancai!
It hancai time!
by SimWongHoo December 28, 2013