He has never been one to 'let the grass grow under his feet'. [=he has never been slow about doing things; he gets things done quickly]
The young candidate hoped to gather votes at the 'grassroots' level in his own neighborhood.
I'm not ready to be 'put out to grass' [='put out to pasture'] just yet.
(..) Not going to find a star like that in the wild. Helicopter. Marty. Buddy. Listen. Everybody has days when they think the grass might be greener somewhere else. Alex. Look at me. I'm ten years old. My life is half over. And I don't even know (..)2005 Madagascar
(..) It's just that another year's come and gone and I'm still doing the same old thing. "Stand over here. Trot over there. Eat some grass. Walk back over here." -I see your problem. -Maybe I should go to law school. You just need to break out of that boring routine. -How? (..)2005 Madagascar