He bit down on the inside of his mouth to keep from yelling.

He took a breath to speak, then bit down on his questions.

He bit down on it so hard she could hear the crunch.

I bit down on the words that wanted to spill out.

She bit down on her lip when he didn't say anything.

He bit down on his lip to keep from talking.

He bit down on his hand to keep from screaming.

I bit down on the words that rose in my throat.

Bite down on the left end, and it turns the head.

She bit down on her anger and took a deep breath.