Meet Jack.

Jack had a friend over today and at one point, Jack came upstairs for something. I was pretty sure it was to use the bathroom, but I wasn't really paying attention until he was headed back downstairs. I stopped him and said, "Hey, what were you doing up here?" (mostly making sure he flushed and washed his hands if he was, indeed, using the bathroom).
"Oh, I was just looking for something."
"What were you looking for?"
"Oh, I don't remember."
"Jack, did you go potty?"
"No."
"What were you doing up here, then?"
"Well.....I just came up here to give you a really big hug!"
I lost it at that point, and he thought it was really funny and said, "Just kidding!"
Finally, I told him that if I went in the bathroom and saw pee in the toilet, he was going to be in big trouble.
"Okay, I'll go flush and wash my hands."
Stinker!
Then he got a time-out for lying. Even though he mostly cracked me up.