How do you annoy your sis?

put your hands over your ears and sing la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la la llllllllllllllllllllllllllllllaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa... when she speaks to you :) look this is a serious matter I am writing a explanation on it and THATS A GREAT IDEA!!!!. The thing you need to improve on is other things such has rip their favourite dolls head and chuck it in the fish tank!!