I've done so much for Grime for you to say you've done than me is bizarre I'm like WOO

from Wiley – Soundboy Killer Lyrics on Rap Genius

Possibly a double entendre:
1- To say Woo in retaliation to a comment just seems plain out random, hence for anyone to make that claim above Wiley aren’t strung properly.

2- A reference to “Woo Riddim”, an Instrumental used by many Grime MC’s

To help improve the meaning of these lyrics, visit "Soundboy Killer" by Wiley Lyrics and leave a comment on the lyrics box