Brock Lesnar's WrestleMania 42 Exit: Real or Just a Tease?

So, Brock Lesnar had this huge moment at WrestleMania 42, right? He faced Oba Femi and, whoa, lost! But then, he left his boots in the ring like he was saying, 'See ya later, alligator!' But wait, he pops back for a rematch! Was it a retirement or just a big tease? Femi's ready to rumble again at SummerSlam, and I'm just here for the wild ride!