The word 'bacronym' is a portmanteau word - which is a combination of two others, in this case combining the words 'back' and 'acronym'.
Acronyms, whether true acronyms or not, and abbreviations, add colour, fun and interest to our language, and thereby they act as mnemonics, or memory devices.
When using acronyms and abbreviations for serious and intentionally open communications ensure that definitions and meanings are understood or explained, or the acronym defeats its own purpose.
It's advisable that if using acronyms in reports and other important communications, such as instructions, manuals, procedures, and training materials, you should include a glossary of acronyms and abbreviations, which hopefully enables the audience to understand the meanings involved.
The acronyms and abbreviations in this listing can therefore be used for various purposes: for simple amusement; for finding unknown meanings; for illustrating and emphasising points that you wish to make in training or speaking or presentations; and for examples of how language and expressions develop and evolve.
Whatever, acronyms and abbreviations add colour and texture to the written and spoken word, and to life in general.
Additionally and equally impressively: Alphabetically Correct Representation Of Neologically Yclept Magniloquence (thanks B Coates).