Go as a hotdog seller, ya boss will love it...Or at least take someone with you who may be able to do this. [NSFW][/NSFW]
I sympathise SN - we're getting stuff round for the Xmas do and they want to do karaoke FFS. £25 a head on top of the meal before hand I suspect i might be asking to have a day's leave at very short notice in December.......