As an engineer myself I would just like to say that I love my college and all my fellow engineers. I have friends who are each type of engineer and they are all fun. If I don't like you, it's probably because you're an asshole.
1. The Theta Taus
The Theta Tau brothers always hang out with each other. In every lecture, you will see an entire row of them sitting together with their sweatshirts and matching hats. They work together in labs, group projects, everything. I wonder if all the professional fraternities move like this. Most of them are super smart and super dedicated to engineering because honestly, even their social life is about engineering.
2. The other frat boys
You'd think that engineers aren't usually frat boys, but of course, lots of other frats have engineers in them. I'm not gonna talk much more about this because I'm sure you all know what frat boys are like and these engineers are pretty much just like them. For some reason, there are waaaay fewer girls who are engineers and in social sororities.
3. The Stereotypical Engineer
I think this is the person that pops into a non-STEM major's head when you say 'engineer.' That kid who is actually passionate about math and physics and who would spend all their time in Ingalls Engineering Library if they could. It's possible they own a t-shirt that looks like the above, or at least an official BU "College of Engineering" t-shirt. They love all their problem sets and are probably the ones who are messing up the curve in your class and the reason you failed chem 101.
4. The Stoners
Every college has its stoner population and ENG is no different. After all, engineering is pretty stressful and what better way for engineers to blow some steam than to smoke a bowl? These guys can do calculus high and honestly can't sit through that boring physics lecture or biology lab sober. They can probably also engineer some pretty cool ways to smoke.
5. The Slackers
These are the people who honestly couldn't care less about physics. They're engineers because they want to make good money after paying ridiculous tuition and because they did pretty well in math in high school anyway. However, they are still trying to get by engineering like they got by in high school and they're just passing all their classes and getting by.
6. The Unicorns
These are the rarest kinds of engineers. They are double majoring in engineering and music, getting 4.0 GPAs, networking with their professors, working two jobs and are still seen at every Allston party there is. We secretly hate these people.