What word or phrase does your mother always say?
"external genitals," late 14c. (pudenda), from Latin pudendum (plural pudenda), literally "thing to be ashamed of," neuter gerundive of pudere "make ashamed; be ashamed," from PIE root *(s)peud- "to punish, repulse." Translated into Old English as scamlim ("shame-limb"); in Middle English also anglicized as pudende (early 15c.). Related: Pudendal.
pudendum pu·den·dum (pyōō-děn'dəm)
n. pl. pu·den·da (-də)
The human external genitalia, especially of a woman.