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If you need to ask, the answer is probably no.
Though "acceptable"... I'm fairly emotionless, very hyper-rational and I accept a whole range of outcomes very easily... your choices, your consequences... I accept you keeping the same username, I accept you changing it to whatever else that is non-offensive, I accept you changing it to something offensive and getting yourself banned for trolling, it's all acceptable to me.
Was checking it would be acceptable to the admins.