omfg! saaay something?
 

aah why do girls always spray pee so hard and loud? lmao!

The reason ist that their Pipe is short. They have no Penis.
They have more pressure but they have to sit.
They cannot Just open the zip. Usually they Pullover the pants down and sit
in the toilet.

As bonetti says, the pipe is shorter, causing more pressure. You are probably referring to the "hissing" noise a lot (but not all) women make when peeing. It's a combination of the pressure with the pressure of the urine exiting/hitting against the labia. Not every girl will pee the same. Labia will affect the flow and force of flow too and even in each girl, each pee occasion will be different depending on how she sits/squats, or how the labia is sitting and which direction the pee will flow around the vulva.