I have a situation where a person is telling many jokes but the problem is it is hard to tell when they are serious. How should this situation be handled?

They are a acquaintance that I work with. (not workplace as this is a more interpersonal issue)

I have a situation where a person is telling many jokes, but the problem is it is hard to tell when they are serious. How should this situation be handled?

They are an acquaintance that I work with. (This question is not on The Workplace as this is a more interpersonal issue.)

I have a situation where a person is telling many jokes but the problem is it is hard to tell when they are serious. How should this situation be handled?

I have a situation where a person is telling many jokes but the problem is it is hard to tell when they are serious. How should this situation be handled?

They are a acquaintance that I work with. (not workplace as this is a more interpersonal issue)