If I'm sick (cold, flu, wuteva) I'll masterbate all day long until I recover. Why? Because the orgasm makes you feel like a million bucks, even if you've got a temp of 102 and have been vomiting constantly.
That 15 seconds or so of bliss is what makes being sick for the other 23 hours, 59 minutes and 45 seconds easier to deal with
Edit: Also bonus points if you vomit while having an orgasm, I bet that'd be kinky as fuck!!!