come from the Greek words "Le", which mean "to fuck", "Bron" which mean "in the ass" and "Jai-més" which means "and run away like a little bitch because you know you didn't -- and can't -- get the job done"
Examples of use:
Delante West: "Hey Lebron! I Lebron James'd your mom last night!!!"
Lebron: "Yea, my mom was pissed... but that's OK... Mo Williams finished the job and I'm gonna Lebron James Cleveland next week!"
Miami Heat Announcer: "Miamiiiii!!! Aaaare you readyyyy to get Lebroned