So Ulf finally said the lines we've been waiting for, not in the best quality but its the closest we'll ever get to the real deal.

v4 Showcase here:

You can watch the clip where Ulf says it here https://clips.twitch.tv/BoredSucculentSnailRickroll

If you don't want the horrible voice lines you can grab Zdanns version that just replaces them with generic callouts here