A bar,club, or night spot that has a music genre that is at least ten to twenty years older than your age. I.E. We are now in the 2000's (2009) Retro would be the 80's and 90's.
I want to go to a retro bar/club because they play the 80's music.
The place to go if you're looking to hook up with a gay/lesbian/bi young person in St.Helens. Especially on a wednesday night.
Gay man: I need me some bumfun, lets go retro bar.