You can download all 26 episodes of The Best Sex Ever series on most Torrent websites, but you should consider the following before doing so.
Legality issuesTorrent websites are a great way for people to share files through what's known as a peer to peer network. Basically, rather than downloading a file from a single source, you download it from a wealth of other users, who are all 'sharing' a single file.
This is, of course, great for legal files such as free books, films, music and the like, but there are some issues with these Torrent websites, too. In fact, the majority of files on Torrent websites, in my experience, are illegal to share and distribute. That's due to the fact that they're uploaded by individuals who don't have the right to do it.
What should you do then?
It's up to you whether you decide to download The Best Sex Ever from a Torrent website. It certainly is a really easy way to obtain all 26 episodes, but you should be aware that it's not legal to obtain them in this way.
I'd recommend that you buy a DVD copy of the series instead. That way you're not breaking the law, and to be honest, it'll likely be a higher quality version as well.
Here's a quick video explaining what Torrent websites are all about: