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.
(..) Most monkeys couldn't live up here. There's no food and few insects to feed on. But Gelados are unique - they're the only monkeys in the world that live almost entirely on grass. They live in the largest assemblies formed by any monkeys. Some groups are strong and they crop the high meadows (..)2006 TvShow: Planet Earth Title: Mountains Season: 1 Episode 2