pi

pi 螕: [R. name of an insect].
gû-pi 牛螕, an insect that attack cows: its blood is used as a glue.
gû-pi, ū-jip bô-chhut,  牛螕, 有入沒出, said in scolding a man who is miserably mean (the insect is said to have no execrement).