The worst song ever?

This is a reply to the topic at hand, not the person above this message. :) There are TONS of worst songs, there really is ONE worst over all.
I like Taylor Swift's "Shake It Off". It's a fun song, that reminds me of the likes of Tiffany and Debbie Gibson.

As for worst songs?
From this decade there's that one song that has the
lyrics , "I don't wanna know,know,know - where it is that you go,go,go."

I honestly find "I'm In Love With (The Shape
Of) Your Body" to be boring and I don;t why it won a Grammy.

Going back to the a decade I know far better, if you
guys wanna hear some cruddy songs from the '80s . Here's a short list :

"Tomorrow Doesn't Matter Tonight" - Starship (People called 'We Built This City' the worst song by them ever? Try this one, it's got absolutely no point and is boring at that. As well as their final top 40 hit "It's Not Enough" from 1989.
"He's A Liar" - The Bee Gees (1981 & barely made the top 40.)
"Danger Zone" - Kenny Loggins, "Take My Breath Away" - Berlin and the rest of the 'TOP GUN' soundtrack. The schmaltziest (easy word suckiest) movie sound track out that decade. Listen to Kenny's 1970s music or Berlin's 1983 album

1986 : Lot of lousy songs masquerading as 'hits'.
Love Touch- Rod Stewart
Out Of Mind, Out Of Sight - The Models (One hit wonder) .
Something Real (Inside Me / Inside You) - Mr. Mister
Friends and Lovers - Carl Anserson and Gloria Loring
(#2 pop hit but the song makes me want to self induce vomiting.

Before I go, if you want the worst #1 hits of the 1980s?.......

Love songs (tie) : Can't Fight This Feeling - REo Speedwagon and Always - Atlantic Starr. POP/ROCK : Together Forever - Rick Astley (a rewrite of 'Rock a Bye Baby) or Heaven is A Place On Earth - Belinda Carisle...a rip off of Bon Jovi's "You Give Love a Bad Name" . Ill skip Milli Vanilli.