kid talk about sacrifice

This morning, i prepared crepe with blueberry for breakfast. My kids love it so much. However, some of the blueberries are sour and my son said:

son: mom, i like blueberries but i dont like it when it is so sour like some of thesr.

i: we cant identify which is sweet or sour…u have to eat it…baby is not complaining, she eats it whether its sweet or sour…

son: i have an idea…i will eat half of the blueberry 1st so i would know if its sweet or sour…

while i was waiting, he said…

son: hmmm, this is so sweet…this is sour…i will give this sweet one to baby…

i: but she doesnt complain if its sour or sweet, why dont u eat the sweet one and give her the sour one…

son: it’s ok, i will eat the sour one and she can have the sweet one…

i: that is so sweet, that is what u called sacrifice…

son: what does that mean?

i: it is like giving up something for the sake of making somebody happy or better…i cant really explain it well…

son: i guess i get it…sacrifice is like loving, doing something or giving up something for somebody u love…

i: i think ur right about that…