A GROUP of lads got a nasty surprise after a prank involving a firework and sex doll went horribly wrong.

Glasgow-based Twitter user shared a video which shows the explosive being attached to the inflatable before it is lit.

One of member of the group is heard saying: "This isn't going to work." before the rocket takes off with the doll.

However, it then proceeds to fall back down into the garden before exploding right in front of the lads.

The video, which has since been deleted by the original poster, was put online yesterday and was liked thousands of times on social media.