Tobi, I accidentally dyed your book blue.

Long story short:

I tripped, fell, wasn't feeling well so someone gave me a bottle of water and when I was ready to go I popped the water bottle in my bag.

What I didn't do was put the lid on properly.

So the water dripped out of the bottle, into my pencil case, through my mini blue highlighter and consequently onto the book I borrowed from Tobi.

And now Tobi's book is blue.

The end.