Getty

Patrick Mahomes made a great play against the Raiders on Sunday ... no, it wasn't a perfect throw or ankle-breaking run -- he got it done with his pottymouth instead.

The Kansas City Chiefs quarterback hoodwinked Las Vegas on a 4th & 1 play at the beginning of the second quarter against while up 7-0 against the division rival. Gallery Launch Gallery Getty

Mahomes got behind center on the play and began yelling out ... trying to make the raiders jump offside so the chiefs would get a five-yard penalty and a subsequent first down -- but, it wasn't working and Mahomes seemed to react in frustration.

You can watch the clip here ... Mahomes clearly yells out "This f***ing never f***ing works man" and stays fully upright -- apparently overcome with frustration to the point

See Full Page