A nice way to rick roll somebody is to change one of his favorite bookmarks to
http://www.smouch.net/lol
That way, when he clicks to go to his bookmark, the rick roll starts.
Like with my brother, the one that I rick rolled a few days ago.
His laptop was on, and he was going to the toilet.
I quickly changed the URL of the YouTube bookmark to the rick roll site, and then sat down in the couch again before he came in again.
I know he goes a lot to YouTube, and I hate it, because it wastes so much bandwidth.
So then I was watching the television in the couch, and after half an hour I heard the famous Rick Astley singing.
My brother was like ' what the fuck?!? ', and after a few seconds he noticed me laughing and he stood up and started punching me a bit. It was so funny, I just couldn't stop laughing.
Definitely gonna do that again