Get Hyper is a song by British electronic producer Droideka. Back in the "glory days" of KSIOlajideBT, this song was iconic among his fanbase. Whilst he wasn't responsible for the creation of the song itself, KSI took partial responsibility for the creation of it's official music video.
The song was released on 22 January 2013 with the music video being uploaded on 6 March 2013.
The video predominately focused on Olatunji pretending to "get hyper" (by which he jumped around manically) in public. Integrated among this were home videos of - presumably - KSI's fans pretending to "get hyper" themselves either publicly or in their bedrooms.
The music video was ultimately a success with over 26,000,000 views on YouTube as of 2017 - it gained popularity and recognition in many schools across the UK.