This is that super drawn-out ‘UUUUUUUUUU’ sound that went viral on WhatsApp for a while. It’s basically someone doing an exaggerated, prolonged groan or yell that people would use to react to weird messages or just mess around in group chats.
Maris UUUUUUUUUUUUUUUUUUUUUU Sound Effect
Shared by Krabby