Are you the kind of person who spends the spring desperately trying to get into POOL SHAPE for the summer . . . or are you just fine just going to Red Robin every night?

May is National Burger Month, and Red Robin is celebrating with a "Bottomless Burger Pass."  The passes will get you a burger and a bottomless side every day of the month of May . . . for only $20.

The Bottomless Burger Passes will be available at RedRobin.com starting tomorrow morning at 11:00 a.m. Eastern.  And if you want one, you should set an alarm, because there's only a limited number of them available, and they're expected to sell out quickly.

It's unclear HOW limited they'll be, but apparently they don't want to repeat Red Lobster's UN-limited "endless shrimp" fiasco.