This Is Not My Hat (Jon Klassen)

This is the perfect book for these guys. It's hilarious. I seriously love Jon Klassen. As Donalyn Miller says: #teamfish!

Goodreads says:

When a tiny fish shoots into view wearing a round blue topper (which happens to fit him perfectly), trouble could be following close behind. So it's a good thing that enormous fish won't wake up. And even if he does, it's not like he'll ever know what happened...
Visual humor swims to the fore as the best-selling Jon Klassenfollows his breakout debut with another deadpan-funny tale.