Bet ya wished ya had one of these...!

[Fred Flintstone]

 

[Will Hewland]

18 minutes ago, Fred Flintstone said:

Balsa wood stock?

 

[Westward]

From the size of the flame out of the muzzle I'd say it's a home load with about 10x too much powder.  

 

[wynno]

It’s a blaser...... that’s German engineering for you

pmsl

 

[Fred Flintstone]

I reckon it’s something home-built following Russian Blue Peter, from 2 egg boxes and a washing up liquid bottle, held together with wood screws and glue, and a healthy dose of ‘cold start’ squirted down the barrel myself

 

[Luke_(NL)]

By the guy laughing behind the camera, I’d venture it’s a prank on his mate. Like exploding cigars back when film was in black and white, only way more likely to involve ambulances, criminal charges and liability claims. 

 

[Fred Flintstone]

By the guy laughing behind the camera, I’d venture it’s a prank on his mate. Like exploding cigars back when film was in black and white, only way more likely to involve ambulances, criminal charges and liability claims. 

That is the most likely explanation to be fair