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Brazil's Whistle-Only WhatsApp Craze Takes Over Groups
5 May
Summary
- Groups enforce a strict no-typing/speaking rule, allowing only whistling.
- Some groups reach their 1,024-member limit in under 24 hours.
- This trend mirrors past internet fads like Orkut's 'I hate Mondays' groups.

A novel trend has emerged in Brazil, captivating users with whistle-only WhatsApp groups. These communities enforce a strict rule: no typing or speaking is permitted, with violators facing immediate removal. Participants communicate exclusively through whistling voice notes, which can range from bird imitations to melodies.
These groups have seen rapid growth, with some attracting up to 600 voice notes daily and quickly reaching their 1,024-member capacity. Viral whistling performances have garnered hundreds of thousands of views on platforms like TikTok. The trend, which began around mid-April, has seen searches for 'whistling' in Brazil hit record highs.
Experts view this phenomenon as a modern iteration of past internet aggregations, such as Orkut's popular 'I hate Mondays' groups. While some participants engage for fleeting online trends, others find a peculiar addiction to the constant whistling. The craze has also inspired niche groups focused on animal sounds or specific car colors.