磨爛蓆 (mo4 laan6 zek6) — to linger around somewhere for a long time; to have prolonged sex [colloquial] in Cantonese
moˎ₄磨laanˍ₆爛zekˍ₆蓆简 磨烂席
Mandarin Pinyin: mo2 lan4 xi2
Meaning of 磨爛蓆
nounto linger around somewhere for a long time; to have prolonged sex [colloquial]