there's also the memory-optimization variant of this, from the land of game dev. see "the programming anti-hero": https://www.gamasutra.com/view/feature/132500/dirty_coding_t...

most of the other game dev dirty trick on gamasutra are good value -- the "(s)elf-exploitation" one from Jonathan Garrett, Insomniac Games is particularly awfully clever:

https://www.gamasutra.com/view/feature/194772/dirty_game_dev...