Go sing with Elvis Share definition Flag Phrase used to mean a person is going to take a piss, usually uttered to a friend in a bar. Hey Dave, save my seat, I'm going to go sing with Elvis. Go sing with Elvis by Smokin' Bitch Magnet February 4, 2006 0 0 Get merch Get the Go sing with Elvis mug. Buy Now — $32.95 See more merch