I don't have a truly favorite song, but rather a couple of songs that I temporarily get obsessed with and sooner or later get completely sick and tired of.
My currently "favorites" would be the biggest hits of this one 70's glam rock band called
Sweet, specifically Ballroom Blitz, Teenage Rampage and Blockbuster. I also enjoy listening to pretty much everything by Queen, especially when it comes to songs like Don't Stop Me Now, Bohemian Rhapsody, Under Pressure and Another One Bites The Dust. Also into pretty much everything by Europe, INXS, Guns 'N Roses, Nightwish, and Dire Straits.
...yeah. Not sure if this is the most appropriate response, but whatever.