Cleverly disguised as a responsible adult?

Since I am shortly going to be a student again (and also because I'm a pedant when it comes to spelling and stuff) I bought a dictionary today. While I was waiting to pay I flicked through it and looked at a random page and this is what I saw: Fart - let out wind from the anus.
So it seems that even when I try to be all grown up and responsible I just can't.
I mean, you can't for a minute imagine that I didn't have a little chuckle right there in the queue at WHSmith right?