you just click the chicken. I don't know why, but for me after the fourth click it lags out. If it happens to you I will either un-share the project or try something else. It might be the hand. I will ban the hand if its because of the hand I made a different project with particles witch I did not share, and it was fine, but the project was different. It would shoot out particles at a certain time auto-maticly. There is a glitch where after a while the chicken's feathers run out and I have no Idea why.
Inspired sort of by https://scratch.mit.edu/projects/466374122/ (bonk simulater by @captinkirk2019 )