To completely annihilate the other team without effort. Often happens when one team is more experienced and organized and the other team consists of random players.
Steamrolling isn't fun for both teams. You need a challenge on equal levels.
Larry: hah! what a bitch! Let's rape him!
Interrupting Kid: Isn't she with Damonte?
Kid: Dude, don't steam-roll me.
The act of verbally owning someone who believes they are making you look ignorant or like a fool. Usually accomplished with a calm, witty demeanor, and no insults.
background: IRL, steam rollers are large powerful machines that move succinctly and pulverize without making a big fuss.
That guy in my history class was steam rolled yesterday when he thought he know more about WWII than me!