I saw someone do this on the internet the other day.The texture of weetabix as intended is already too sloppy for my personal taste, so the thought of Jack going out of her way to make them sloppier has ruined my morning.
When I was a child I somehow developed a habit of buttering weetabix and eating them as you would slices of toast. I always acknowledged this as a bit weird though, rather than marketing myself as a quirky culinary genius (Jack if you're reading this then you absolutely do not have my permission to replicate this "recipe", thanks)
I think I would prefer weetabix with butter (I simply cannot afford it so would probably use lard) than have it with hot water.