Get ready to feel old, Kevin Federline is now 40.
Britney Spears' ex-husband turns the big 4-0 today, and to celebrate his milestone we are honoring the man who brought greatness to the world with "PopoZão."
As for how Federline will be ringing in the big day, he plans on hanging out with his kids and family, but this weekend he's heading to Sin City.
K-Fed is scheduled to perform a DJ set Saturday night at the Crazy Horse III in Las Vegas. He'll be on the ones and twos, but will also be doing meet and greets.
As we previously reported, Federline is back in child support negotiations with Britney Spears after he asked to review their situation following her recent wave of success. Britney's team insulted K-Fed by offering no money, but instead tried to budget out the $20,000 he already receives. He now wants Britney to hand over her financial documents.
Also kind of ironic that Federline is spending his 40th in Las Vegas, where Britney made millions of dollars and became the focal point for reopening child support discussions.
Happy Birthday, K-Fed ... now let's jam to "PopoZão" like it's 2006.