i think i've read through all of this thread. And it seems to have been suggested that perhaps the eggs were not actually eaten. Having experience with teenagers and teenage boys, i think the likelihood of this young man actually eating them is small. i can probably say with certainty that he did not eat them. Now, perhaps he broke one open and saw a live chick and then tossed them. Or maybe he took them and put them in an incubator and hatched them, or gave them to a friend to hatch them.
Something doesn't quite smell right about this whole thing. Were it me, i would want to do some undercover investigating. Ask around. Maybe mention to a friend of this young man that you know what really happened. Give a knowing glare, and wait to see if they spill the beans. i think a serious I-Spy is in order, especially since those other eggs went missing.
No matter what actually happened, the bottom line is your eggs were taken. You should be compensated, by that young man. Perhaps that will teach him to stop playing hurtful pranks. But please consider that his comment that he ate them is most likely not true. Some boys just think it's funny to be gross and mean.