Ew, that looks like dog food ...
But it doesn't look so flash.
And getting negative comments about their lunches has unfortunately been a common occurrence for my boys.
From very young we have drilled into them both that commenting negatively on someone else's food choice is not polite. This has given them some insulation against the taunts. Their first reaction is "why is that person being so rude?"
In this multi-cultural world in which we live it's probably doubly important. One man's delicacy is another's nightmare!!