Yuh Yuh Yuhhhhh was created in a mashup that was performed/recorded by Why Don't We. The mashup consisted of Gucci Gang and Ten Million. Yuh Yuh Yuhhhhh was said by Corbyn
Matthew Besson, 1/5 of Why Don't We. Yuh Yuh Yuhhhhh means '
yeah,
yeah, yeahhhhh.'
This is how it was preformed:
Gucci Gang, Gucci Gang, Gucci Gang, Gucci Gang
Corbyn: Yuh
Yuh Yuhhhhh
Gucci Gang, Gucci Gang, Gucci Gang, Gucci Gang.
(just a snippet of their mashup
rest can be found on their Instagram, @whydontwemusic )