Hyphen of two words 1.Pookie the Tagalog word for beef curtain and 2. avolcano.
Pookano is a verb meaning: TO PISS OUT OF YOUR ASS
I told you not to eat at that panda bbq, now you have pookano again. There's not even panda in Korea.
A hybrid of the two root words, "poop" and "volcano". It is a poop volcano. Often experienced after eating greasy foods, the day after drinking excessive amounts of alcohol, or daily after having the gall bladder removed.
I had pookano so bad, I didn't leave the bathroom for three and a half days!