The little grey mouse that lived in my wall prospered for many days on nibbles of my lunch. i'd
pack a meal before bed and, while i slept, he would take small bites of my lunch, which i left on
the counter. he'd take a cracker crumble here, and a bread crumb there, but he wouldn't take too
much and he'd always clean up after himself. things were going quite well for him and i didn't
even know he existed, until he got sloppy. one night while i slept, he ate all of my chips and left
behind a big mess. when i awoke to this sight, i knew what had happened to my chips. so the
next night when he returned for another snack, he found a nice, delicious piece of
lightly balanced on a mouse trap. now i don't have to share my chips anymore.
7. what is the theme of this story?