EDIT: Wow, this has kinda...changed completely? XD Whatever.
This may be a trait confined to me, but some people hear a word and visualize something completely unrelated. Or related. But it's based on the sound of the word.
So I came up with an idea for a game. Somebody posts a word, and the next person posts what they see and a new word. So if I said "fish"and you visualized a baboon, you would say "A baboon."
I'll start.
Leaf.