Acetylene-filled balloons explode - GIF

[hemmjo]

I don't know about the numbers But when i was a kid I filled a ballon with acetylene and it fell to the floor fastest then an air-filled ballon. My friend stupidly put a match to it and burned off his eyebrowes

It is possible this apparent discrepancy of density of acetylene may be caused by the balloon itself. The pressure inside a balloon is a bit higher than 1 Bar due to the elasticity of the balloon itself and how much it is inflated.

[hemmjo]

I saw someone decide to get a fast light on a BBQ, blew O2 onto the briquettes and apparently saturated them. When lit they went off like black powder.

Things to NOT do with flammable metals and gases, I prefer to keep all my appendages and do stuff like professional fireworks.

You forgot to include "(STILL NOT ME) " in this one!!!