北狼:
年轻的时候我也和你一样, 动不动和人大骂。 现在年纪大了, 发觉不是办法, 不但对自己心理不好, 而且没有说服力。
Ask yourself: Why lower yourself to their level? If you really want to get back to them, I suggest you learn how to insult without swearing. The English are famous for that. It's an art.
You had some valid points to get across. Don't get deterred by distractors who use dirty tactics to get you off-track. Use wordplay to put them back in their rightful place.
Good luck to whatever you will be doing.
From an engineer to another engineer albeit from a different generation.

PS: Still learning to type with Pinyin and struggling.