Skinny Mobile: Ads in My Phone Call

Engineering The Audio Interruption

The technical backbone of the campaign was a custom-engineered platform developed by Colenso BBDO in collaboration with Radlab. The system enabled real-time audio injection, allowing pre-recorded, 10-second Skinny ad clips to be spliced into live voice call streams without dropping the connection. To maintain strict compliance with privacy regulations, the team implemented a mandatory consent flow where callers were required to share a text prompt with their recipient to confirm mutual agreement before the sponsored line was activated.

The Economics Of Absurdity

By bypassing traditional media buys entirely, Skinny transformed private phone lines into a proprietary, zero-cost media channel. The campaign leaned heavily into the brand's self-deprecating humor, with ad copy that openly mocked the concept of corporate propaganda. This irreverent tone extended to the prize pool, which intentionally avoided standard tech gadgets in favor of eccentric rewards. Winners walked away with items ranging from a chest freezer filled with sausages and a year's supply of rotisserie chickens to robotic vacuum cleaners and cosmetic hairline restoration treatments.

Cultivating A Brand Community

Hadleigh Sinclair, Group Creative Director at Colenso BBDO, noted that the campaign functioned as a "co-conspirator" model. Rather than relying on expensive celebrity endorsements, the agency leveraged the brand's existing "cult" following to turn everyday Kiwis into active participants. Over the 5-week promotional period, customers spent 26.5 hours talking on the sponsored line, effectively acting as brand ambassadors while simultaneously competing for the quirky prize list. This approach reinforced the Skinny brand promise: spending less on advertising to pass savings directly to the consumer.