This is the start of a series-type-thing. This and the next five strips will all feature Billy prank-answering phone calls. So hope you enjoy that!
Originally, Billy's line in the last panel was "stuck-up jerk" instead of "self-centered jerk." I didn't think that was much of a punchline, so I changed it to what it is now, to add irony since Billy was the one being self-centered. It barely adds anything to the joke, but it's better than before.