- Who
- Saint Joseph's University
- What
- 407 people
- Where
- United States (Philadelphia)
- When
The most people flapping simultaneously is 407, achieved by Saint Joseph's University (USA), in Philadelphia, Pennsylvania, USA, on 15 November 2012.
The most people flapping simultaneously is 407, achieved by Saint Joseph's University (USA), in Philadelphia, Pennsylvania, USA, on 15 November 2012.