I have fixed three different people a cup of " the drink" (i jokingly call it my potion) and they liked it, which shut them up about "living off of some tea that tastes like ass"
I think bringing up the crazy things other people do to make themselves feel better i.e. buy shoes, take anti depressants, drink, eat massive amounts of chocolate...can really put the Master-Cleanse in perspective- you're not hurting anyone and you are helping yourself- why should anyone have a problem with that?
Keep your chin up and don't let anyone dictate your mood-only you can make yourself happy.
Also, i'm on day five! Congrats, halfway there!