What is first rate cunt lapper?

This is from an eikaiwa lesson video of a faux-geisha teaching Japanese women how to talk dirrrty in English. (Eikaiwa means English conversation by the way)

I wonder how many women actually used these lines, and how many befuddled men lost wood after hearing that they’re a first rate cunt lapper in broken English. “Come on Toshi! Come on!”