A derogative term for a vegetarian. Especially for someone who is "overly" vegetarian, like the person who gets mad when other people at the table order meat.
Emily: "You're ordering the steak? Don't you have a conscience?"
George: "God Emily you're such a tofu bag."
George: "God Emily you're such a tofu bag."
by tofubags4lyfe July 2, 2013