A phrase that is used to one's friend when they are
a) having a panic attack
b) freaking out about something pointless
c) worried / anxious / nervous
d) in a hurry and are constantly annoying you to move faster
"Calm your ponies, she's probably just PMSing"
"Wow, can you please like, hurry up? I don't have all day."
"Hey calm your ponies, I'm working on it."