Green’s Dictionary of Slang

(W.I.) a woman’s breasts.

2000		R. Antoni Grandmother’s Erotic Folktales 12: I took out the little money that I used to keep between my tot-tots tied up in a kerchief .
2006		R. Antoni Carnival 24: What is it with our lovely Ashling’s tot-tots? Her nipples, I mean. They appear to be pierced.