My Stack Overflow gives me a weird design and stars coming out of my mouse pointer. WTF? How do I get rid of them?
This "weird" design you mention is actually Stack's dedication to the Internet's 30th Birthday combined with an April Fools joke.
You can click the clock icon at the top right-hand corner of any page (next to your Inbox icon) to go back to the future (a.k.a. to the current design).
More info here: Announcing the Stack Exchange Time Machine