Nagvert
A smelly ad that comes out of nowhere because you let some software into your life. It’s like a beggar at your door, and it won’t stop until you give it money.
You opened your browser and got 3 ads in one second, all from the same software.
Your anti-virus keeps offering you a 'Special Deal' every time you log in.
You just got an ad for a 'Pro Version' while you were trying to watch a cat video.