The short clip appears to show the blackcurrant drink move from the back of the bar and drop over the side of the counter onto the floor at The Old Crown pub in Birmingham.
Onlookers can be seen leaning over the bar, baffled at what they have just seen.
Witnessed by Andy Lightfoot, 28, and Rudie Jones, 26, the two men admitted they couldn't understand what had happened.
"It was very freaky," Andy told the MailOnline. "We couldn't understand how on earth the bottle toppled over the bar like that.
Amy Carter, a 24-year-old barmaid at The Old Crown, said she had only left the bar momentarily when the incident occurred.
"I went down to the cellar to get some more spirits and suddenly I heard a big bang from upstairs.
Read Full Story: Daily Mirror UK