One who's repetitious bragging resembles a prehistoric beast's warcry. These folks aren't ones you would wish to spend long amounts of time with. You will spend the majority of your time with them figuring out who to get them to leave.
RRRRRAWR I got this new truck, a raise, and I slept with 6 women last night. Advanced bragasaurus's can also be referred as bragasaurus rex's.
The feeling you get when you are with, or are thinking about, a large number of bros at one time. Or doing a number of extremely fratty, quasi-gay acts. When a culmination of broments arouse you to the point of a brogasm.
I just had the biggest brogasm after we all took our shirts off, sang the lyrics to 'Pour Some Sugar On Me', and chest bumped each other.
The orgastic sensation shared among a group of bros when they are having a really fucking awesome time together (not sexual). Often is accompanied by high-fiving and chest bumping.
When a group of bros all show up to a kickback wearing the SAME Bro Tank and shades. It's just so crazy that they have a Brogasm.