child's play

The nickname was hung on him by players in Pachuca’s youth system who thought that Lozano, then 11, resembled the evil red-headed Chucky doll from the “Child’s Play” series of horror films.

But what she has endured since giving her all in the floor exercise at the Paris Olympics makes the most difficult routine seem like child’s play.

It’ll be child’s play, she says.

It would be child's play to show that in, let's say, Washington, DC, if you take 50 people who are doing really well, they share some characteristic, and then to infer that that characteristic is the reason for their success.

A tunnel that can take billions of years to dig, and makes The Shawshank Redemption look like child's play.