Easy...
EASY!!!!
https://www.youtube.com/watch?v=J1CJIevhUr8
PLEASE, do NOT click the link, if you have any sanity left.
@LukeAlmighty it's a classic tho, do you hate numa numa too?
me, I have it easy in the department of hated songs, I hate by artists, mostly very popular and very Russian
like this shit 
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@LukeAlmighty also there's a separate category of annoying advertisement songs
@matana
Yeah, the artificial brainworms are always so bad....
One local shop's mascot became literally the most hated person in the entire nation over night, all thanks to this advert.
And I mean, realy hated. To this day, you can invoke a pure rage in a lot of czechs just by saying 100 tabletů týdně.
https://www.youtube.com/watch?v=XLOtIZ2fqro