That's how Honda defined my vegetarianism, and it amused me so much that I've decided to go with it. Basically this is how it works: when I'm alone, I don't eat meat. But I will eat meat on some social occasions. This allows me to go to a dinner, and eat the meatloaf the host lovingly prepared for all of us. Since I'm not eating meat for sustainability reasons, I think this works well, because I think eating meat once a week or once every two weeks is sustainable, but eating meat twice a day is not. Allowing myself meat on social occasions allows me to treat myself to sushi and/or dimsum and/or Korean barbecue, and also allows me to not be a social pariah who my friends hate for my food pickiness.
As for the sober part, that's because sometimes when I get drunk, I forget that I'm a vegetarian. ;)
2 months ago