The act of completely dominating a conversation, whether amongst a crowd or an intimate conversation. the "Bulldozer" can be anyone, inebriated or not, so long as everyone else that has something can't, simply because the said person just talks louder to drown them out.
Tim: Hey guys i went to th...
Shannon: Man, i was over at the mall yesterday, and i say this movie, it was cool.
Jim: What were you saying, Tim?
Tim: Oh, just that i went and saw Iron ma...
Shannon: You'll never guess who i say at the mall yesterday! Fuckin Lance!
Tim: Dude, im getting out of the way of this bulldozing, i can't say shit.