Watch it - your mates will start saying you're wasting away - look at you, you look really gaunt! Your all sagging flesh!
Been there, done that, got the t-shirt (was XXXL :o)
Mine was a more surreal moment. One morning I looked in the mirror and realised I had a neck - ie, there was a gap between where my double chins finished and my shoulders began. I went round telling everyone.
No wonder people think I'm mad!