Hello I Love You Lyrics

Lyric discussion by okmanek 

Cover art for Hello I Love You lyrics by Roger Waters

I don't speak english fluently so I don't understand one line. What does "Like a has-been out to grass" mean?

Well, a has-been would be somebody who used to be famous but isn't anymore, and out to grass might be like cattle/sheep, who graze off the grass... I have no idea how those two things relate. :P