AGH! I hate this too! Or like if you're out to eat with your friend's or family and they try to force you to eat more because they say you're "starving yourself" when really you've eaten plenty. ARGH. Like the other day I was out to eat with my dad and I ordered some ahi tuna, I ate a good amount and when the waiter came to take my plate I said I was finished but my dad goes "No! You need to eat those last few bites!" Right in front of the waiter too.
I told him I was full and had the waiter take it anyway. It seems like sometimes people just don't get it, even if they know you're trying to lose weight.
My dad even had a talk with me about making sure I am eating enough, does he really think a girl my size would be able to eat too little? Sometimes I just feel like saying "Look at me! Clearly I've eaten enough." I am sticking to my daily caloric intake sheesh.