Today's xkcd reminds me that about 15 pounds of grapefruit into this year, I tried to calculate how many I could eat a day, if I were to do were peel and eat grapefruit, all day. I may have been trying to figure out if it is possible to live on a pure grapefruit diet. I remember arriving at a figure around 70.
My actual daily consumption at the height of grapefruit season is 3 to 5. It's become my favorite winter fruit and quite puts one off nasty sweet oranges. There's a trick to both the peeling and the eating of grapefruit which the xkcd guy has apparently never learned, that avoids the healhful skin and leaves only the delicious tart flavour droplets behind.
I'm available for lessons, the first 2 or 3 weeks that the Texas ruby reds are in season.
(Of course as wrong as Randall is about grapefruit, he's 5 million times as wrong about a proper tomato..)