Hey, crybaby Ko-chan. Here comes a tunnel you like.
Only Koichi knows Viet is a crybaby.
My daughter's high fever doesn't seem to be coming down. She is usually a crybaby, but it seems like she doesn't even have energy to cry now and I'm worried.
You've seen that 泣く is to cry, so you can probably guess that 泣き is just "cry." You've also seen how 虫 is rarely a nice thing to call someone. So what's a mean thing you can call someone who cries? How about a crybaby?
The readings come from 泣く and 虫. So long as you're okay with those two words you should be able to read this one too.