Is it normal that i once dreamt that i killed everyone in my class?

I remember once back when i was in 6th grade i had what seemed to be a great dream (I was very aware).... I was dressed like a Chef making Pasta with Tomato sauce for everyone in my class when i suddenly found out i had a Katana/JapSword in my hands.... What happened next was blood and gore as i killed everyone extremely fast without even wanting to.

It was so unrealistic, my arms moving in super speed turning every single classmate into Mincemeat.

When i woke up i was quite frustrated, and i never wanted to dream anything like that. But looking back at the dream now i find it quite funny as i can still remember it like was it yesterday. When they tried to run my arms somehow just stretched awllowing me to kill them all.