On July 29 episode of 'Knowing Brothers', Kim Jong Kook and Kang Ho Dong battled it to see who would win in a name tag challenge.

The name tag game/challenge has gotten much popularity over the years through the show 'Running Man'. Many wondered for years as to what would happen if these two heavy hitters battled it out - they tried it out on 'Knowing Brothers' this week.

Check out the clip to see what happened on the show!

SEE ALSO: Kim Jong Kook says he almost quit 'Running Man' because of Kang Ho Dong?