my boss is weird

So I woke up with a sore throat, kind of a headache, fatigue, that brain no worky feeling, and considered calling in sick. But I didn't.

Then there's my boss.

ME: [boring words telling boss what caller was looking for on our website]
BOSS: Give it to me, let me work on it.
ME: [gratefully hands post-it to boss]
BOSS: [with a straight face!] OK, I feel like I'm going to throw up, so I'll work on this for a while, but I may go throw up.
ME: ...
ME: Well just don't throw up on the paper, in case I have to take over for you.
BOSS: Oh, I won't, I'll throw up on my computer.