I've noticed that people get reaaaaaally angry when they lose on a pokemon sim..
For example, my rain dance team managed to piss some guy off because I kept beating him, another guy got so mad because my Kingdra swept 3 pokemon in a row, all 3 being pokemon he thought were faster(fail).
I've also seen people getting angry over me using Blissey and Skarmory.
Or critting with Stone Edge..
YES MAYBE I DO EMPLOY LAME TACTICS BUT I STILL WON LOL.
At least I've never had to resort to paraflinch tactics.