Misunderstood

I took the kids to the park tonight. I brought along their water bottles from their school lunchboxes. It's hot outside, and Trevor drained what was left in his bottle pretty quickly. Then, he asked Devin if he could have some of his.

Devin offered to share. But, when he handed the bottle over, Trevor said, "EWWW!" Devin had been finishing off his sandwich, and he left a little bit of it in the cap of the water bottle.

Devin, ever the gentleman, cleaned it off for his brother.

I thought he said, "I cleaned it for my brother."

What he actually said was, "I cleaned it with my slobber."