Why do upperclassman hate freshman, what the fuck is this girls problem?

Anonymous
so there's this girl and she's had a problem with me since i was in f-ing middle school. i was a cheerleader in 8th grade and she was a junior in 11th grade. now im a freshman she's a senior, the highschool cheerleaders always helped out at the middleschoolers practice. anyways i didn't even talk to her and she would always say shit aboute to my brother who was a senior at the time. she told him i was a show off which i find crazy because i was so lazy and never wanted to do anything. but honestly i just think she was jealous because i was 13 and can do a wide verison of back flips, she was 16 and could barely do a cartwheel. i didn't wanna try out for cheer because all the girls on the team were bitchy. she also randomly brought me up at cheer to my friend whos on the team just to call me stupid. today at lunch my friends picked a random table to sit at and they sat down at it next to us and started shit talking all my friends saying stuff like what is she wearing and wheres her shirt cuz it was sort of low cut but not really and i bet she's a freshman just look at them then they scowled so i snaped at them i dont even remember what i said and then she was like your like 12 shut up. then she was like do you know who her brother is? and they were like your brothers so nice what the fuck happend to you. and then they purposely started talking about who he had sex with so id hear. then they continued to say shit about us, so my friend goes there's plenty of open seats over there. so she said yeah why dont you go move! and he said because we were here first. and she said well we've been sitting here for 4 years this is OUR table. like wth who do they think they are the fucking plastics? like we were just sitting there minding our own business and they just start bitching at us. just because we are younger then them doesn't make them better then us. why are upper classman so mean to freshman, we didn't do anything we were just born younger.. whats this girls problem?
Updates
+1 y
the question is what do you think her problem is? and what should i do if this happens again?
Why do upperclassman hate freshman, what the fuck is this girls problem?
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