Give loved ones and friends fair warning because your temper will not be your own this week. One moment you’ll be completely loving and charming and eager to please, and the next? You’ll be like a bitch on wheels snapping at the heels of anyone in reach. You have the Mercury/Pluto conjunction on Dec. 19 followed by the Mercury/Uranus square on Dec. 20 to blame for this Jekyll and Hyde switcheroo. Mercury is the planet of the mind in astrology as well as the planet of the mouth which means that you’ll be saying all kinds of inappropriate things that you’ll wish you could take back. That’s why it’s a good idea to ask for forgiveness ahead of time. Thankfully Mercury is a fast-moving planet so you should be back to normal by Christmas.