I think you might be referring to the "Running Man" challenge or dance that was popularized by the K-pop group Big Bang. Here's some information about it:

1. The Running Man dance became very popular in South Korea and internationally, especially around 2011-2013.

2. It originated as a dance move performed by members of the K-pop group Big Bang during their performances.

3. The move involves a quick, rhythmic stepping motion with the legs while the upper body remains relatively still.

4. Many other K-pop groups and celebrities began incorporating this dance into their routines or as a fun challenge.

5. The dance gained so much popularity that it became a cultural phenomenon, with people around the world trying to perfect the move.

6. While Big Bang is most commonly associated with originating the dance, similar moves existed in hip-hop dancing prior to its popularity with the group.

If you meant something else by "runningman bigbang", please provide more context and I'll be happy to help further!