No offense, but i'm not taking the chance that he'll search mine on google and come up with this.
Why do cleaners take so long?
Note: I found that there are forty eight letters; 12 times four, relating to the 12 at the start, which makes me think it's a number based riddle. Below is what you get when you turn each letter into a number. probably useless, but what the hell.
Each space is a gap between words, each dash is a space between letters, each line is one group of twelve.
14-1-13-5 19-21-3-8 23-9-14-11
5-22-55-18 5-5 5-22-5 5-22-5
3-18-15-17-21-5-20 3-1-13-19 24