Riverside's Ian Leslie Milne, 61, has pleaded not guilty to two counts of indecent assault.

Yesterday the Launceston Magistrates Court heard that Mr Milne helped build the Borrowdale ski club in the 1970s and had served as its president.

The alleged victim, who cannot be identified, said Mr Milne was driving him home from Ben Lomond when they stopped unexpectedly at his home for tea.

He said Mr Milne discussed how to arouse women before suggesting they have "sex education".

They got into bed and Mr Milne began touching his penis, he said.

"All this time he was talking about how to arouse women," the man told prosecutor Peter Sherriff.

Under cross-examination the man said he reported Mr Milne in 2010 after attending a talk by Bravehearts founder Hetty Johnston.

Defence counsel Alan Hensley said the alleged assault was an "after-the-fact fabrication".

"That's impossible in my my mind. I can recollect it clearly," the man said.

Several years later when he was 18 the man said Mr Milne again sexually assaulted him in a cabin at Ben Lomond. The man admitted being drunk when he fell over and said Mr Milne helped him into bed.

He then pulled down his pants and performed oral sex on him, he said.

Mr Hensley suggested the encounter was consensual experimentation but the man had become ashamed, prompting him to make the allegations.

"No, I couldn't (agree with) that statement at all. What happened to me was completely unexpected and certainly happened without my consent," he said.

The court also heard Mr Milne had taken the man, when he was about 11, to his car and masturbated in front of him using a condom but he was not charged over this allegation. When police put the incident to him in October 2010, Mr Milne said: "I can't verify, I can't deny because I don't know."

When asked about the incident in his bed he again said he couldn't confirm or deny it because of black spots in his memory caused by depression.

The matter was adjourned to August 1.

pbillings@examiner.com.au