Now that i think of it, we act the same way in school. Loud and senseless conversations, pranks, and laughter abound when we're around. Other groups seem to have the same collective behaviour, laughing at what they all think is funny, doing what interests them all. Some are volatile to others, lashing out at criticism, some are impervious due to pride. Our group seems to be walking the line between the two attitudes.
However, it seems as if when a group disperses , another different state of personality surfaces, usually one more meek and gentle. Case in point: when our group separates and each manyak goes their own way, I have noticed that we are quieter, and more suppressed.
Can this be proven in a broader observation? perhaps. but this is what i can conclude for now:
Collective Behaviour, that specifically described as a "Barkada", will usually create an encouraging sense of eccentricity among its members.