When you are doing a chick doggy style. You go in like your going to grab her tits and abruptly swing your arms outwards so she falls on her face. Now start pushing her around the room into coffe tables, lamps, etc. making bulldozing sounds.

From STEM, an abbreviation short for "Science, Technology, Engineering and Mathematics", a STEMlord is a pejorative term for a particular kind of person who has studied in these areas at university or works in these fields who holds a pretentious, condescending attitude to anyone who has studied in any other fields, particularly the Arts and Humanities. They typically believe themselves to be more "intelligent" and "rational", while generally remaining incredibly ignorant outside of their areas of expertise and having the charisma of a rotting pig's backside.

A guy who plows a plethora of women in a short amount of time

Bulldozer: whilst during anal penetration, the act of driving your partner around the room on their face.

The bull dozer is performed when a guy is hittin' some chick from the back. Once deep in the action, the guy pulls the chick's arms behind her back(so she falls face down on the bed)and pushes her.
Now from here you have some options(but not limited to): Pushing her around the bed. Ramming her head into the wall, or my personal favorite, Pushing her right off the bed!

The fat kid you follow behind at School to get through a crowd quickly.

Bulldozer (noun) - A bulldozer is a person who forces themselves in your life without your invitation. They force themselves by bulldozing their way into a persons life. As they bulldoze their way into your life, they destroy everything in their path. Thru forcing their presence in your world, it results in total destruction. By the time you remove the bulldozer from your world, if you are lucky, there is massive destruction in your world and the world of those closest to,you forced upon you against your will.