If you are working at the gym, do not come up to me on the elliptical trainer and announce loudly: "where have you been? you have not come to the gym for so long!"
Act huffy security-guard-power-trippy when I am trying to get off my bike before I show you my pass. I could eat you for breakfast, I am so cranky!
Whistle and hum loudly and atonally with your headphones on when I am trying to get work done. Ok, well just don't do it Today.
Do not look skeptical when I say my bad mood is PMS and then act dissapointed with me for being grumpy, thus giving me even more hormone fuelled reasons to be paranoid.