There are some words and letters that I always seem to transpose or misspell, like a completely involuntary thing.
Some of the regulars include "univeristy" ... mostly when typing "university," transposing Rs and 9s ... yeah, I don't get the relation between a letter and a number, but like I said, completely involuntary.
But I realized the best one today.
When I type "Home Depot," for some reason, I get "Home Deport" ....
If you don't see why that's funny, don't worry about it, it means you wouldn't think it's funny even if you knew.