つん読

meɪθɹiː ʃʌwɒn bʌfɔː dʌtuː maθɹiːi ʃʌwɒn bʌfɔː dʌtuː slaʃ ʃʌwɒn djuːɪwɒn dʒɪwɒn ɹʌtuː ʃanwɒn ʃʌwɒn djuːɪwɒndʒɪwɒn ɹʌtuːʃɐwɒnn bʊks paɪld ʌp laɪk ei5 maʊntɪn

In Chinese 买书不读 (mǎi shū bù dú) / 书堆积如山 (shū duījī rúshān - books piled up like a mountain)

The act of buying books and not reading them, letting them pile up.