Stick in the muds are resistant to change.

The stick-in-the-muds refused to try anything new.

There are several in-line expansions in the document.

She solved the problem in a way that impressed everyone.

She drops in to see her grandmother every Sunday.

I dropped in to see my friend yesterday.

I am dropping in to say hello.

I made a dropping in at the party last night.

We shared many in-jokes during our time together.

She followed the in-order instructions to assemble the furniture.