Is this fact or its normal?

well i have this friend she is short we all love and her she nice we r nice to her but i mean, she sort of aggressive when you do something little to her she goes wtf and or like slap you , ok well im not being anything im sorry if i ask this , IS IT TRUE THAT SHORT PEOPLE GET ANGRY REALLY QUICKLY, i have heard it ,well i didnt just believe it but i mean my friend she nice and all kool but if u do something lil to her she get really like wtf what are you doing it sort of weird she different, she count me as her besty me tooo we play together but her act is bit over high, she slpas someone if she is really opset ,