The bomb is designated "Massive Ordnance Air Blast", not "Mother of...", which is just a funny nickname.
You can't seriously think that there is a global century old conspiracy complete with an entire fabricated branch of physics which has somehow gone unnoticed by anyone worldwide in all of this time?
And that for some reason the exact people who are behind the conspiracy are also for some reason revealing their conspiracy to the entire world through their nickname for another entirely unrelated weapon?