When you store a list of foods in your head by easiest to least easiest to purge and depending on how much time you have is what you binge on.

When you don't stop purging until you feel fully empty and not one more particle of food comes up...even purging past the point of blood coming up.

When seeing blood come up doesn't phase you anymore and you keep going until you are done.

When you take a shower afterwards so you have an excuse for being in the bathroom so long so no one suspects anything.

When you see your bulimia as normal and wonder how others don't see it the way you do. (even though you obviously don't want others to feel the way you do or do what you do to yourself)

When you are jealous of anorexics for having such self control.

When you are doing good at restricting yourself from food completely, but then you eat...and keep eating.

When you binge and purge instead of sleep.