Depends on the severity of my illness, but those who know me in a professional manner know that if I had to call in sick or miss something because I was sick, then I'm pretty ill.

I miss classes a lot when I'm feeling under the weather because I can't focus, but I never miss work because I'm sick, unless it's something that's causing me to vomit repeatedly.

I don't usually milk it TOO much, but when I'm sick and at work, I do have a tendency to milk it a bit, mostly just to get me out of work a bit earlier. I don't milk it with friends or significant others, though.