What is another word for most off the wall?
Pronunciation: [mˈə͡ʊst ˈɒf ðə wˈɔːl] (IPA) 
If you're looking for a word to describe something that's peculiar or eccentric, "most off the wall" isn't the only option. For instance, you could describe something as eccentric, quirky, strange, or unconventional. Another option is using the term "unusual" to describe something that's particularly out of the ordinary. Similarly, you could opt for the phrase "outlandish" to describe something that's really bizarre or weird. If you want to emphasize the unexpected or surprising nature of something, the phrase "unforeseeable" could also be a good option. Essentially, there are many different synonyms for describing things that are unconventional or outside of the norm, so it just depends on the specific connotations you're going for in your writing.
