A person who has odd or peculiar tastes; someone unusually curious or fond of unusual things.
そんな古い玩具を集めるなんて、物好きだね。
Collecting such old toys — you're an odd fellow.
物好きに頼まれて、珍しい店に付き合った。
At the insistence of a curious friend, I went along to a peculiar shop.
彼は物好きにも自分で壊れたロボットを直してしまった。
Being what he is, he fixed the broken robot himself.