Actually, a British friend routinely went to Amsterdam to attend j/o night in one of the gay clubs there. Everyone was walking around with erections and masturbating.

Since this was considered a major contribution to safe sex, it had a grant from the state or city health authorities, and the notice was posted on the door.

I don't think such events are relevant for Christians, but I wouldn't call it 'perverted and sick.' It's just on the perfunctory side in terms of what you can accomplish with your sexuality.