I continually have songs stuck in my head. To the point it can drive me and others crazy.
I used to have a song of the week section on my noticeboard at work. Sometimes I'd get into (fun) trouble for passing on the disease to others.
One time I had Cocaine in my head for weeks. And I had a little friend there and every time we had to email about a work related issue, there would be a line from the song in it.
Like...
Hi XXX,
If you want to get down, down on the ground.
What time is the meeting this afternoon?
OR
Hi XXX,
When is the collateral arriving for the stand next week?
She don't lie, she don't lie, she don't lie.