Meaning of the word "off the wall" in English

What does "off the wall" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

off the wall

US /ɔf ðə wɔl/
UK /ɒf ðə wɔːl/

Idiom

unusual, eccentric, or unconventional

Example:
Her ideas are always a bit off the wall, but sometimes they work.
He made an off the wall comment that surprised everyone.