@th30wl Aim at the sides, so it slopes down like in a slide. Its basic knowledge, how do you not know this? Do you even have a penis?
Anyway, sitting down to piss is a pain. Also I imagine you can't do the shake at the end doing it while sitting.
Edit: It sprays everywhere often enough to make you consider peeing while sitting? Are you sure you don't need to see a doctor or something?