Banter is a loose expression covering what otherwise might be abusive behaviour on the basis that everyone participates willingly and on an equal level. It usually refers to the trading of jokes, insults, images, and actions. Using the word 'banter' can sometimes be a way of justifying or minimising the impact of negative behaviour.
Courts have consistently stated that even if banter is considered "normal" or "expected" in a group setting, it can amount to discrimination and harassment if anyone finds it demeaning.
Doesn't matter. Even if you are "joking" and meant no offense, if offense is taken then you could be subject to disciplinary measures. The law considers the impact on and perception of the recipient, not your meaning or intention.
Even when using privacy settings, posts can be copied and forwarded to others.
Your University place may be withdrawn if misconduct is proven. If your degree is linked to professional standards, your 'fitness to practice' may be under review, putting your university place and future career at risk.
Online comments are public and may be seen by future employers who will be judging your suitability as a potential employee and ambassador for their organisation.
A successful US public relations executive lost her job after tweeting a racist message about AIDS in Africa. By the time she had landed, her tweet had gone viral and her company had condemned her behaviour, pledging to 'take appropriate action'.