I've tried searching for terms relating to humourous repetition, but the only term I can find is "repetition". And that's absolutely fine, I don't mind referring to it as such if necessary, but I feel that this particular device is specific enough that it needs something more specific to describe it.
As an example, let's say someone makes a list of top 5 characters they don't like in World of Warcraft, and they say
- Garrosh. 2. Garrosh. 3. Garrosh. 4. Garrosh. 5. Garrosh
The humour lies in the fact that Garrosh is a recognisably-terrible character to the majority of WoW players for several reasons. The repetition itself isn't funny, but the context of what is being repeated renders it humourous to people who understand the context.
Another example, from Alestorm's song "Mexico":
The wenches they are plenty, the alcohol is free
The party lasts all through the night and the alcohol is free
The humour lying in the fact that he's listing reasons the place he goes is fun and mentions the alcohol being free twice because, well, he's a pirate. Of course that's going to be a selling point worth mentioning more than once.
But other than repetition, does anyone know of a term that describes this kind of device?