HSK 4 grammar · pattern
不X白不X
不X白不X — might as well X (a free chance)
Pattern
+ + + +
X is a verb
( ) can be left out · other words may come before, between and after
How it works
不X白不X literally "not to X is to miss out for nothing" — the chance is free or already paid for, so "might as well X", "would be a waste not to X". It urges taking an available benefit.
Examples
票是免费的，不看白不看。
Piào shì miǎnfèi de, bú kàn bái bú kàn.
The tickets are free — might as well watch.
反正管饭，不吃白不吃。
Fǎnzhèng guǎnfàn, bù chī bái bù chī.
They're feeding us anyway, so might as well eat.
这钱是给你的，不拿白不拿。
Zhè qián shì gěi nǐ de, bù ná bái bù ná.
This money is for you — you'd be silly not to take it.
Related
See it in a story
In the app, 不X白不X is underlined wherever it appears in the stories you read, and practised with sentences from them. Free.