Personally, I don’t like sarcasm tags on a good line. If people can’t differentiate, getting slapped down for assuming the worst and arguing is probably a good way to learn.
There’s a local radio host here with an dry and irreverent sense of humor, but he just ruins it by adding “just kidding” and the end of half his lines. If he had more confidence to be misunderstood by a few, he’d be way more entertaining to everyone else.