I think it's important to take a couple of steps back and reassess the situation.

He could bounce back and forth between different topics effortlessly.

Could you please get off my back? I'm trying to concentrate.

His rude behavior really put my back up.

I always carry my laptop in my backpack.

I have been suffering from a severe backache since yesterday.

The backbench MPs have been vocal in their opposition to the proposed legislation.

She is always backbiting about her coworkers.

She is known to be a backbiter.