食住花生等睇戲

Etymology
According to The Encyclopedia of Virtual Communities in Hong Kong, the idiom comes from Mr. Peanut's slogan, initially intented to promote peanuts as a side dish when watching movies. The slang later used in HKGolden and spread to the other forums. Compared to get the popcorn.

Idiom

 * 1)  to watch a conflict and treat it as an entertainment