to turn / to wrench / button / nu (Greek letter Νν)
纽
=
丑
+
纟
:
The ugly ox (丑) complained about his itching belly button (纽) in front of Nefertiti (ni) in the outhouse (ou3). Promptly Nefertiti turns (纽) him around and finds that there is a silk worm (纟) looking out of his belly button (纽), which she pulls out with a wrench (纽).