So this happened around 3 years ago in college.

Some software was missing on a random PC in college, so the professor asked this girl, to copy it to that PC since its the only one the setup file.

The solutions are many here, but what this girl did made me and 2 others ragequit the room.

She right clicked copy, unplugged the mouse, plugged in the other PC and tried clicking paste.

I facepalmed so hard, I almost broke my nose that day.