It is often stated that comedy works well as “rule of three”, meaning that jokes work best when they do not go beyond an initial punchline and two additional related gags.
Going for an additional attempt to make someone laugh about the same subject ("the awkward fourth") beyond this number can produce strongly diminishing returns in humor. This is largely due to the fact that comedy comes from novelty and the subversion of expectations. Dragging it out can “ruin” the joke.
If each gag attempt takes a long time, additional attempts can go beyond awkward and even become obnoxious.
Joe was initially notable for his intentional invocation of the awkward fourth joke in a row, usually to annoy Lars. He has since made efforts to retire the gag, as it has an unfortunate effect of making the episodes slightly worse.