I know this is an old thread, but...
I "have" bought a whole dozen and done exactly that - eaten the whole thing - by myself.
Seriously, I don't know how I didn't weigh more than I did. I must have always been fairly active despite my terrible, terrible eating!
Restart 5/18/15 began at 263.9. All time high was 275 in 7/03. Low in Summer 2012 of 169.