Near the end of the episode Rick Potion No. 9, both Rick and Morty repeatedly refer to their situation with the word Cronenbourg. To be more specific:
When Rick turns almost everyone on Earth into hideously deformed mutants by modifying their genes en masse, Morty accuses him of "...creating a bunch of Cronenbourgs."
The only Cronenbourg I know of (or could find) is a place in France (and the eponymous brewery), and I don't think it's known for... that. So what's their meaning?