What inspired you to knit bras?
Because the hiragana ends with an う sound, you know this word is a verb. The kanji itself means knit so the verb vocab version is to knit.
When you start to knit, you always end up with the same thing every time when you're done, no matter what you're trying to make: The letter "A" (あ). It's so frustrating that you can't knit anything else.