An HC completes the phrase in dominant, making the phrase feel not only incomplete and unresolved, but leaving it in the dominant area specifically adds tension to the point where your ear can only be satisfied by hearing another phrase that provides the answer. Half Cadences always finish on a V but can come from any chord before it. Most often, it will come from a Tonic area or Predominant area before moving to Dominant on this final V chord.
I suggest you find a picture of Biden sniffing somebody. Then make the caption: Biden. The Quicker-Sniffer-Upper. Or if you want to use that one you could say: Me: Listening how to over-throw the government and then My parents: Holding the FBI back
