Watching sports. Never understood the appeal, never will. Why do you want to watch a bunch of grown ass, ridiculously well paid men throw a ball around?
I love CERTAIN mundane boring tasks. Completely dependent on the task itself. I will give a recent example. Painting concrete wall in basement black for home theater. Well the concrete has tons of crevices where a regular brush or roller wont get into. I could use a sprayer, I can put on thicker coats, I could leave it as most are not that visible. But no. I enjoy listening to a book on tape or podcast as I stand there and paint the tiny holes with a tiny brush until my back hurts.