noun
being crazy about something despite being bad at it
Almost exclusively used in the proverb 下手の横好き (へたのよこずき), describing someone who loves doing something but is not skilled at it. Often used self-deprecatingly or humorously.
See also: 下手の横好き
「下手の横好き」で、ゴルフは下手だけど大好きなんです。
I'm a classic case of 'being crazy about something you're bad at' — I love golf even though I'm terrible at it.
彼の料理は下手の横好きで、味はともかく楽しそうに作る。
His cooking is a labor of love despite his lack of skill; he enjoys making it regardless of the taste.