This is recent footage from Duke Street in Norwich, UK, showing a particularly icy patch of pavement causing trouble to many an unsuspecting pedestrian.
The playful music fits the video well and also props to the girl at 04:27 for trying to warn the passersby (many of whom appeared to ignore her).
"A trust fall is a purported trust-building game often conducted
as a group exercise in which a person deliberately allows themselves to
fall, relying on the other members of the group to catch the person".
Things don't always go down that way though...
1. Hmmm... it seems they didn't think this through...
2. Miscommunication
3. Fake, but still...
You can hear her falling on a mat in the third one, plus the acting isn't exactly top notch.
I didn't notice it at first viewing though. Only after reading some of the Youtube comments.