How do we crash a sleepover?

Question

I need some tips. See my younger sister is going over to someone's house this saturday and there's gonna be this huge sleepover. Like 20 girls all around 13. So me and some of the brothers of the other girls there were going to just show up there with silly string, start blasting away and then speed off. But we since learned that silly string can damage furniture. so that and water guns were eliminated. So any other extremely annoying and obnoxious things to do? Someone suggested getting together annoying instruments (i.e. accordion, recorder, bad guitar playing, cymbals)

Answer 1

Go in there with air horns and just start balsting away. They are like 5 bucks at walmart.

Answer 2

nice way to respect your sis.lol. well im not sure what could be very obnoxious without being destructive.sorry..