Ripe for (something) adjective
To be ready for something to happen
Time is ripe for the village to develop tourism.
He is ripe for the transfer to a new club.
The country is ripe for electoral reform.
Used to emphasize one's availability or openness to a situation
Children or adults often say this phrase to get their friends to join in something, especially to jump into a swimming pool (pond, lake, etc.)
“Last one in is a rotten egg!” yelled Jane, jumping into the pool.