A Few Weeks Ago I Had This Dream Where I

a few weeks ago i had this dream where i was playing poker with this big group of people (in my dream they were my friends)., and then all of a sudden in the middle of our game a couple of them just decided to sing the song bang bang, and then everyone else (including me) joined in...and ever since this that dream i've become really obsessed with the song bang bang. like first i was listening to it once every two days, then once a day, now i'm listening to it three times a day...i know there must be a connection between my dream and my sudden obsession with the song but i don't know what it is.