The numbers “80808” are a play on the song’s hook: “aye doe”.
‘808’ is a phrase that could refer to a few things:
The Roland TR-808, a classic, popular analogue drum machine that has been used widely in hip-hop and electronic music, especially during the 80’s and 90’s.
808 is also known as a police internal code for a disturbance of peace. Given Death Grips ‘loud, violent lyrics and sound, this would likely make more sense.