Answer:metaphor
Explanation:
The figurative language is a metaphor
The saying means what is considered good is in fact bad and what is considered bad is actually good.
an example could be you trust someone and they seem to be a good person but looks are deceiving and they turn out to be bad
Only if you said its bad to keep up appearances and you did it yourself it would be hypocritical.
The boss clapped for me when I presented my idea at work on Monday.