B:"From which site do you have your information?"
I:*sarcastic answer and even tagged it as one*
B:*thinks I'm a conspiracy theorist*
I:"It was a sarcastic answer to your question."
B:"In this case you should have tagged A."
Uhm... Yeah, that really makes sense to tag others than you talk to.
Consider this a friendly, local pub. Make yourself at home, bring your friends, have a good time! Meet new people, have a laugh, enjoy the ambience, and the Oxford commas.