For me it’s gotta be whom, I like it because a) it sounds so whimsical and silly like omg look at that silly man using correct grammar in this economy
b) when I speak German it’s more important to get that kinda thing right so it’s like a bit of German practice in English
...
Hmmm
I’ve gotta say the ability to combine words, such as you all into y’all or it is into it‘s. It makes writing and speaking so much easier, and you can make some pretty funny words with it.
I find scientific degree names funny and cool, ex. Volcanologist. Who would want their job name to be VOLCANOLAGIST, IT'S SUCH A COOL NAME!!!!