I didn't think we had to come in today, because we came in yesterday

No, I don't know what the logic is there either, but I swear that was offered up last week. This was the week before the Christmas break; perhaps that's where the logic is, although I still can't see it!!

The train went the wrong way

Oh Reeeeeally?

My friend (in the same class) was ill, so I didn't come in

This is from a seventeen year old!

My mum's having an operation and I need to look after her

A goody this one, but unfortunately it's a genuine excuse. One to remember though if you need a week or two off!!!

I felt ill last night so I didn't bother coming in today

On which planet does that make sense?

My braces broke so I had to get them fixed

This was an actual excuse today. Which type of braces I didn't ask!!