I tried to run to him, but the mud sucked my feet down.

Immediately the mud sucked him in up to his ankles.

The mud sucked at his feet but didn't slow him appreciably.

A rare rain had fallen the day before and mud sucked on his shoes.

It was cold outside, and the mud sucked at the soles of his sneakers.

Mud sucked at her feet as she stumbled to keep up with the retinue.

The mud was thick and black and sucked at his knees.

The mud under him sucked and squelched unpleasantly every time he moved.

Mud oozed and sucked in tiny bogs all about them.

Mud sucked and squelched under the hooves of the horses.