butt heads AmE informal

I want to know what will happen when the two butt heads.

Some kids are just built to butt heads with their parents.

We butt heads a little bit, but that’s just part of the process.

He clearly wasn't the type of person to back down, so they butt heads more often than not.

But as it turned out, he wasn't the one she would butt heads with that day.

The two soon may butt heads in electronic books as well.

Well, does he really want to butt heads with his brother twice a year?

She sees black, I see white, and so we butt heads over just about everything.

Business led us to butt heads briefly once upon a time, long ago.

Because in every episode, someone has to butt heads with her.

Those people you'll be butting heads with are my students' parents.

Especially after last night when it seemed like they were butting heads.

You have a lot of cooks in the kitchen, and sometimes they butt heads.

A lot of big people with strong ideas butting heads.

He is friends with Christian and respects him, though they often butt heads.

For a few seconds I thought they might start butting heads.

He would hate to butt heads with her in a dark alley.

You've got to stop butting heads, or you're in for a world of hurt.

So the two friends and their philosophies will butt heads Sunday.

Liam is also a strong person and that's why they often butt heads.

"I get frustrated when we start to butt heads," she says.

Together, the two chambers have done little more than butt heads, name names, and point fingers.

"They're really butting heads over this in Washington right now," one industry official said.

Instead we butt heads with them three times in the last few days and hardly got a scratch for our trouble.

Not to mention that while you're up here you don't have to keep butting heads with Father.