Simply inscribing the meaning 'WHAT'
Originally seeming from 'What-Thing' (Wahtin), which offend tends to transcribe what's up / that's popping
VARIANT: Weytin, Weni, what-do, what-bi (bi as in 'be')
Wetin dey go on?
Dem talk say make you do wetin?! Or know be so Dem talk?
Origin: Late 1600s Lagos, Nigeria