1) the state of acting like or being pro basketball player Lebron James. 2)used to describe when someone is making a tough decision and broadcasts it to everyone only to gain attention.
1. I just dunked on this guy today at the park. It was total Lebronism
2. Person 1:He can't decide who he wants to go to the dance with so he's going to ask everyone who should go with and pick the opposite person of what most people think.
Person 2:Dude thats such Lebronism.
1.(n) When acting like Lebron James on the basketball court, and the defence can not guard you.
1st man: yo yestarday i LeBronism these this guy at the basketball game
2nd man: nice i wish i could do that