Agree. It’s intuition combined with observing body language…and having a good understanding of the nature of the person who made the joke.
Let’s assume that you know a person isn’t merely teasing…and is being snide…in the guise of a joke…how do you deal with the person?
Do you be the bigger and better person and let it go?
Do you look the person square in the eye and say “Come again? Did I hear what I think you said? Say it again!” I’ve heard this often makes the person uncomfortable to the point that they usually don’t dare to squeak if they know they’re guilty.
Do you figure…how low must a person feel to make such snide jokes…and that too in an underhanded cowardly manner? And move on.