Why Did I Do That?

I keep stealing my sister's highlighters. It's not like I need them; they're just so pretty and colorful. Every time I start to reach for one, though, a voice in my head says it's wrong. But then another part of me thinks maybe a little bit of fun won't hurt anyone. Am I really this petty? Shouldn't older siblings be setting better examples instead of having younger ones do it? Is this just a phase or something deeper? What should I do? #siblings #petty