Sneak a Pinch

Like all siblings, Liam and Dash pick on each other. But they've developed their own unique method to do so.

They eat each other.

If Boy A is bothered by Boy B, he'll take a pinch of Boy B or his toy and pop it into his mouth. Understand that nothing is actually going into his mouth. He's pretending. But Boy B gets really upset.

It used to stop there but now Boy B will pinch at Boy A's mouth and put the stolen pinch back from whence it came. Which upsets Boy A.

And thus the score is settled. Bizarrely so.