Mine would be the power of persuasion. That way when I call somebody an idiot they will stop being an idiot. Rather than say a stupid joke about my mom after.
That would be awesome, you could literally so anything. For example if you stopped time you could move around and do anything, or you could go back in time and so forth the things you could do are limitless, this would be an amazing power.
I would be indestructible can't die or get injured then I would do Las Vegas shows letting anyone in the audience bring in a weapon of their choice and try to kill me I would be a rich mug