look up any word, like the eiffel tower:
 
1.
An advert that builds up really well to a massive anticlimax, which consequently makes you not want to do/use/be associated with what the advert was about
Hey dude did you see that Co-op express advert? all that building up just to say "we'll just go to Co-op" such an antivert
by killallblacks January 07, 2011