Early in my computer days I told someone I wanted a larger hard drive (larger than 40MB, so now I've dated myself) and he joked about finding me a really physically huge one about ten years old that would have been as big as the rest of the PC, if not one of those ones the size of a clothes washer...but maybe only held 5 MB. He knew what I meant, of course, he was just pulling my chain (and I ended up with a 120MB hard drive that was cheaper than the 40MB had been).
And yes MB is not a typo; I still remember how excited I was to get a 1/2 GB hard drive the next time after that.
(Of course with cameras, physical size of the sensor is much more of a consideration than physical size of a hard drive, so using the word "larger" for pickle count is, as you point out, fraught with hazards.)