pop-up ad 

A window that pops up on the screen suddenly, often without warning, advertising something. Nobody ever actually buys what the pop-up is advertising. They're just annoying pieces of crap. Some people create ones that install malware or other unwanted files onto a user's computer.

In other words, an embodiment of Satan.

I clicked the download button for a file on Megaupload and a pop-up ad came up advertising a free iPad. I knew it had to be a scam, so I tried to close it, but it wouldn't close. So I had to close Firefox in Task Manager, but that closed ALL running Firefox processes, not just the pop-up ad. Freakin' annoying.

pop-up ad by anonymous159057430583057832057 December 26, 2010

pop up ads 

the plague that annoys the shit out of me on the internet

pop up ads are rlly annoying

pop up ads by WhyDoINeedToTypeInAGodDamnName May 31, 2017

pop up ads 

annoying little shits

I opened up the site, and all these pop up ads came up

pop up ads by True to my Roots July 7, 2003

Pop up ads 

Some fucking stupid shit that shows up every time your about to search something and you click on the ad because it popped up out of fucking no where.

“Pop up ads suck! They almost started World War 3!”

Pop up ads by piktureit November 17, 2020

pop-up ads 

1. Ads that no single person would even consider considering. Why must they even exist?
2. Synonymous to the words 'annoying', 'blinding', 'frustrating' and 'crash'.

I got pop-up added on UrbanDictionary.com of the future.

pop-up ads by Bastardized Bottomburp October 12, 2003

pop-up ads 

the pre-cursor to pop-under ads

when I closed the browser I found a thousand pop-under ads

pop-up ads by enlightened hippie breeder May 24, 2005

pop-up add 

Obnoxious internet adds which will pop up in new windows when a site with them is visited.

I hate pop-up adds!

pop-up add by Isaac Brown December 11, 2003