SEATTLE (CBS) — Marshawn Lynch did not let a volunteer off easy during a one-on-one blocking drill.

The former Seattle Seahawks running back — who was one of the best blocking backs in the league — completely destroyed a volunteer, and made sure he knew it afterward.

Talk about going full Beast Mode.

Check it out! (Warning: video contains NSFW language.)

MORE: Register for the 3rd-annual Beast Mode Challenge here. A portion of every ticket sale will go toward Marshawn Lynch’s Fam 1st Family Foundation.