My two year old, dearest Abby, loves to play doctor. Wherein she insists on shoving a fake plastic thermometer into my mouth. Wherein I refuse and get in trouble with ‘Dr. Abby.’ However, it’s safer that way because I know that she has no concept of what sterility is, cleanliness is and generally no sense of hygiene. I love to play with her, but I have to draw the line somewhere because just like working 168 hours a week you might be able to do it, but it would eventually come back to bite. I might actually have to go to the real doctor to fix the ailment that I got from the two year old doctor.

So, I recommend the following:
Over react to everything you pretend have. Make a big stink about being sick
Don’t let anything actually get into your mouth.
Don’t actually take any of the pills that a young doctor might try to cram into your face
Above all fake the intake of the item, whatever it may be. If it looks like you got it into you, the world is a better place.
Lastly, don’t play doctor too long, come up with other things to do together, like playing stuntman who jumps out of tall trees. Then, when you get injured you can really go to the doctor.