What about when that person slowly gets into your lane against the wall/road instead of walking straight.

What I do is tailgate them until the last second then suddenly press Nox to pass them on the best side, and bye bye.

I had no idea that people put this amount of thought into walking.

Just stop for 30 seconds (hoping that you're not in a hurry).

Sometimes I give zero fucks and kick it into turbo mode.

Both of those options are still better than walking slightly slower.

Turn and look them in the eyes "oh, you wanna make a race of it".....