Biff Burger is an old fast food chain from the 50's. There's only one left in the world, and that's in St. Pete. They do all kinda retro car and bike nights there, Saturday is their huge bike night. It's mostly Harleys and Metric cruisers, but you get a good show of standards and sports. They have live music too, which on Saturday, will be my pop's band Trilogy. They play all old classic rock covers.
Joints south on 49th street, right near 38th ave. If you're heading south on 49th, it's on the left.
The whole deal really starts around 7pm and lasts until about midnight.