NO WAY MAN - this ain't no Tupperware. I'm deeply offended that you would refer to my mug as tupperware. There are hundreds of differences between common tupperware and my very special mug. In fact, my mug is registered in a book with other special mugs - so I know it's special. I paid more for my mug than you paid for your mug - it's a REAL mug. Not everybody can get a mug like this one, and you can get tupperware at Wal-Mart. So, just drop that whole tupperware thang.