Headbutts and high falls - new stunts are never easy, though the fails are often funny
When trying something new there's always a chance of failure, and the harder the trick the harder the fail.
This eternal truth was discovered the hard way by a cheerleading team in Brazil and a football unicyclist in Bulgaria.
In the first clip, filmed in Florianopolis, Brazil, on 8 June 2020, Luiza Avila's friends toss her into the air as part of a new cheerleading trick
Unfortunately, when catching her they either underestimate her weight or the catchers should not have been standing directly opposite one another when she fell, because their heads are thrown forward by the force of catching her, and directly into the head of the person opposite, in a violent, unintentional kiss.
The filmer, Beli Marcatti wrote: "This group of friends was practicing cheerleading and something went wrong when they tried a new skill."
In the second clip, filmed in Plovdiv in Bulgaria on 23 May 2021, Sinan Öztürk's street show ended with what could have been a painful fail.
The street performer is doing cool football tricks while riding a unicycle, but when he prepares for the final trick, things go wrong suddenly and he crashes to the ground.
He said: "At that moment, I was doing a street show in Plovdiv and was just about to do my last trick for the day before my unicycle broke. Interestingly, I have never had problems with any of my other unicycles."