While playing with my two daughters just now...

ME: <stops, looks thoughtfully into space>

6-YEAR-OLD: What's wrong, Daddy?

ME: <farts>

6YO: Ohhhh...You made that face because you were about to fart.

ME: ....

6YO: Well, at least it wasn't in our room again.

ME: ...

6YO: During storytime.