Stuck at the dinner table with mom and dad? Don't panic. Get a cup you can't see through, fill it a little with milk, pretend to drink and spit your food in there. Give it to the dogs, if you have any. Spit into a napkin. Say you ate a ton at school/work/friends so you're not hungry enough to finish it all. Keep saying you're busy, you need to do something else so you can be excused.