學個詞：＂Freak＂

In English, you can use the word 'freak' with a noun to say that someone is obsessed by something which you think is strange. It's an informal phrase, usually used if the person saying it is not interested in the hobby or action. So someone might be a 'football freak' if they're watching football. In a slightly different way. 'To freak someone out' is a phrasal verb which means to make someone feel strong emotions, like panic or fear.

＂Freak＂當名詞用時，可以用來說某人非常著迷或狂熱於某件事上，狂熱的程度到你覺得他怪，稱為＂狂人或怪咖＂，這是一個非正式的用法，通常前頭會綴上一些興趣或行動，例如＂fitness freak＂，就意旨＂健身狂人＂，這詞的使用有帶戲謔之意，請小心使用。而＂To freak someone out＂這個動詞片語意思稍有不同，是指帶給某人強烈的情緒，如驚嚇或恐慌等，如＂It freaks me out!＂可以說＂嚇到我了！＂

From BBC learning English