Rolf Harris told an 11-year-old girl he wanted to be the first person to give her "a tongue kiss", a jury has heard.
The woman, who cannot be named for legal reasons, told Southwark Crown Court that she met the artist at a family friend's home in Australia in 1969 while she was off sick from school.
The woman said: "When I came down the stairs he asked me how old I was, and he said 'good, I want to be the first one to introduce you to a tongue kiss'.
"I just stood there, I didn't think anything. I just stood there, I froze."
It is claimed that Harris, 84, then walked up to the girl and kissed her, putting his tongue in her mouth.
She is not one of the alleged victims on the indictment because the allegation is said to have happened abroad before such matters could be prosecuted in the UK, but has been called as a supporting prosecution witness.