[Trisquel-users] Any libre + uncensored 18+ tubes or forums?

[hd-scania]

As a keen libre desktop user I am highly worried against nonfree 18+  
websites, even some are malware themselves, but I have no ideas to libre 18+  
tubes and forums, now I have an 18+ gif social channel which is sourced under  
DuckDuckGo, SearX, YaCy, but both are search engines, but my need is libre  
and independent 18+ tubes and forums. Any recommendations and experiences to  
be shared here?