I've watched a video of Trevor Noah (Obama Calls For People To Vote Early In The Wake Of Postal Delays | The Daily Show With Trevor Noah, ~3:56), and get confused this sentence: "but then all the beach bodies were sold out".
Noah explains that some people believe Trump is slowing down the US Postal Service in order to discourage voting by mail. A clip plays in which Obama encourages citizens to vote early to avoid problems. Then Noah says
America really is an upside down place. The Black president is telling everyone to vote early, and the white president is trying to make sure everyone's late.
And Obama's right—waiting until the last minute never works out. Like that one year I waited until July to get my beach body, (crying) but then all the beach bodies were sold out."
As I understand, "beach bodies" means hot man/women in the beach, how can he say "all the beach bodies were sold out"? The bodies cannot be goods to be sold, can anyone please help me with explanation? thanks a lot.