煎せん餅べい布ぶ団とん

noun

thin, hard bedding; worn-out futon

Refers to a futon that has become thin and hard from long use, like a rice cracker (煎餅). Often used humorously or self-deprecatingly.

• この煎せん餅べい布ぶ団とんじゃ、腰こしが痛いたくて眠ねむれないよ。