Answer:
Answering to something serious with a differently approached response
Explanation:
Basically, facetious is where you're responding innapropriately to something serious.
For example, "9/11 is funny haha"
(Bad example)
Now, there is some difference to that, where he's speaking to the friends, he's being more jokingly then he should be depending on the situation, and being sarcastic.
The clue is he's answering sarcasticly, meaning the friends might be being serious, and he doesn't seem to care.
