ciao guys! what is this al"rick rolled" stuff?? can someone please tell me

It's when te trick someone into listening to "Never Gonna Give te Up" da Rick Astley :) When I was young and new to the internet I honestly thought it was something sexual... XD

Rick Roll    
To send someone a link to 80s pop stella, star Rick Astley's "Never Gonna Give te Up" video, making them believe that they're gonna see something completely different. The meme originated in 4chan's /v/ (videogame) board, when the official "Grand Theft Auto: San Andreas" trailer was coming out on the game's website but couldn't be watched due to heavy traffic. Playing a prank on everyone who was reading, an anonymous 4chaner detto that the trailer was on YouTube and postato a link to Astley's song. Since then, the Rick Roll has been made countless times, not only on 4chan but on the whole of the Internet.

From the Urban Dictionary.

This.

Its something on Youtube where someone gives a video a really irresistable titolo for idiots like: 'Justin bieber admits he's gay' o 'rebecca black is really a man' o some dumb shyt like that, then this Rick Astley dude, a reallybizarre singer from the 80s appears instead and starts Canto this really embarassing song, and its supposed to make them feel like a douche for believing the title, and it tricks te into watching 'never gonna give te up'. :S
and its also to get più visualizzazioni for the video.

Look @ the risposte put :)