also: ぴえーん
interjection
Slangy, onomatopoeic interjection expressing sadness, disappointment, or a cute crying reaction, common on social media and in texting.
テストで0点取っちゃった…ぴえん。
I got a zero on the test... boohoo.
推しのグッズが売り切れてた、ぴえん。
My favorite idol's merch was sold out, sob sob.