Having the hiccups means that someone is thinking about you.
G is an Indian American whose family has strong cultural ties with India. This is memorable to him because his family would often talk about this with him.
Context: This practice came up during an interview about Indian cultural norms and practices.
The idea that if someone is talking about you, there will be a response in your body is a fairly common idea throughout Asia. In Japan and China, if someone is talking about you, you would sneeze in response.