So Taylor's plan this era is to repeat the same thing in the chorus over and over again.
Don't be shady
See ha explanation video on that. There was a reasoning behind it for this track. As for Shake It Off, I'm sure it was just to make it 100000% catchy (and it worked.)
I hated SIO until around 2 weeks later and some switch flipped.
'Cause the players gonna play, play, play, play, play
And the haters gonna hate, hate, hate, hate, hate
Baby, I'm just gonna shake, shake, shake, shake, shake
I shake it off, I shake it off
Get a sock so no 'stains' will show up on the furniture 
There was a reasoning behind it for this track. As for Shake It Off, I'm sure it was just to make it 100000% catchy (and it worked.)
