Magic Spoon, the people who brought us a childhood cereal grownups can eat, created a totally new category. Instead of a protein bar - which wait a second, aren’t any fun at all! - they created a low-sugar, protein-packed rice crispy treat for adults. They asked Guesthouse to create two campaigns for live, in-the-wild A/B testing of :30s, :15s, and 8 :06s.

The first shows Magic Spoon founders Gabi and Greg wondering if a protein treat could work. They then see grown-ups trying them - and instantly being thrust into a 90’s Xtreme cereal commercial from when they were kids.

Hmmm it just might work.

See our amazing cast of Guests at Ads Of The World by Clios.