Typos and Out-of-Context Writings

My apologies if there's already a thread for this.

I feel like the title is somewhat self explanatory; here’s an example I just made accidentally:

Spoiler

The […] headquarters rose an impressive four feet into the sky.

Four whole feet?? So very impressive XD

Another set of footsteps line the halls, their echoes echoing off the walls.

With a smirk, he smirked