Click things and see what happens. Except for the sign saying "Don't click me!". Whatever you do, don't click that. Obviously.
"Burn!" is from the hilarious "Eh Bra!" by @24elenast: https://scratch.mit.edu/projects/96106565/ Every single line in that project is funny, and very thankful to use as samples. @Nishpish even made a song out of it: https://scratch.mit.edu/projects/611895382/ The sprites are from the Scratch library, although slightly edited. Wondering why there are cloud variables? Look inside and find out. But play around with it first.