He sat so low his chin nearly touched the desktop.

Then he drew himself up until his chin touched the wood.

He felt it on the back of his head, pushing down until his chin touched his chest.

She sank down until her chin touched the surface of the water.

After an interval he nodded, his chin touching her hair.

He sighed, and slid down in the water until his chin touched it.

His chin touched her hair and he withdrew quickly.

Then he would haul himself up until his chin touched the branch, lower himself and repeat the move.

He let his head fall forward until his chin touched his chest.

Rotated it so that my chin touched the stone.