TWICE are quickly climbing up the hill to success with no hint of slowing down anytime soon!

Their MV for debut track "Like OOH-AHH" has now hit its 5 million views mark on YouTube within six days, which is an incredibly impressive feat for a rookie group. It probably helped at first that everyone was curious about JYPE's new girl group, but only their hard work accounts for their continued success days after the fact.

SEE ALSO: TWICE announces fifth full-length album 'DIVE' for Japanese release on July 17

Just try to get the song out of your head!  Re-watch the MV above.