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Britney Spears is the OG mouseketeer-turned-pop star — but do you know every single detail about her? Chances are you still have some learning to do, so get you education on with these fun facts about our favorite chart-topping X-Factor judgette!

1. Fans Lust for Her Leftovers
Turns out Britney loves herself a half sandwich! But maybe homeslice should be careful about where she leaves her leftovers — pervy superfans are amongst us. Yep, back in 2006, some deranged fan-boy bought Brit's discarded sandwich for $500 on ebay. Consider us both horrified and extremely hungry for pastrami and velveeta.

2. She Opened a Restaurant in the Roaring 2002s!
Is there anything the Britster can't do? Oh right, run a successful restaurant. Britney opened her first New York eatery, NYLA, in 2002, but tragically it did a giant belly flop and closed in 2003. Apparently, some people don't think Skittles and Cheetos qualify as a meal.

3. She Caused Justin Timberlake to Cry a River
Did you know that Justin Timberlake's grammy award winning hit "Cry Me a River" was inspired by his relationship with Brit-Brit? Sure, it took him years to admit the truth, but us super-fans (read: super nerds) knew it all along. Britney will always be our sun and our earth.

4. She Loves Writing
Guys, Britney has already written two autobiographies. That's equivalent to one autobiography every 15 years. Some quick mental math tells us that Britney has, like, four more autobiographies left in her. Thank god, because there are only so many times we can read 50 Shades of Grey.

5. She's Popular
Someone call Nada Surf! Queen Brit was the sixth person on Twitter to reach over 10 million followers, and her current total is over 11 million and counting. Stronger than yesterday, y'all.

Source: Hollywood Reporter / The Hollywood Gossip / Music News / The Smoking Gun