I now fully understand the terms sick as a dog, and feel like I've been hit by a train, or other large vehicle. I haven't been sick-as in immunologically challenged in about 10 years.that's my best guess anyway since I can't actually remember the last time I was sick. Oh I've had kidney stones, given birth, and other painful things. but not sick until this weekend. strep. I hear it's much harder on adults, and I actually believe it. Now for more ibuprofen, more antibiotics, and more sleep.