If people try to make you eat.

OH NO! THEY ARE TRYING TO MAKE YOU EAT!
    Claim you have a headache.
    Say you already ate.
    Express that you feel sick.
    Say you feel like you getting the flu.
    Say you don't like the food.
   Claim that you are trying to eat healthier, so you can only eat fresh veggies.
   Use the excuse that you are depressed/stressed because of school, your boyfriend/girlfriend, etc.
   Say that you are busy and will fix a plate for later.
   Miss dinner by stalling.  "I will be right there," or "be out in a few."
   Say you want to eat in your room because you are watching a TV show.
   Say you need to be at your TV to stop the tape recorder when commercials come on to save room.
    Share you food, with a friend, a pet, the trash can, etc.
    Spit it out in a cup when "drinking."
   Only take a few bits and jumble it around in your plate.
    Say that it is hard to chew because your tooth aches (braces, maybe?)
    Eat some, then when you are "finished," go "take a shower" and the sound of the water will mask the purging sound in the toilet.