Enjoy this fun Sip Cup, a Mug for those who need to tell everyone what they are doing as they are doing it. :-P
PLA is technically food safe, but there are numerous other factors to consider, see this article for more. If you want to really use this cup hassle free, have it printed in ceramic. If you happen to know a ceramic 3D printing service or happen to own a ceramic printer, message me. For reals, I've been searching with no luck.