Constipation
noun, verbal noun, の adjective
べんぴ
便所 (べんじょ) Toilet, Restroom, Bathroom
便秘 (べんぴ) Constipation
便利 (べんり) Convenient, Handy, Useful
分泌 (ぶんぴつ、ぶんぴ) Secretion, Discharge
Ben べん could only pee ぴ because of Constipation.