Catchphrase of a classic MTV show … or a hint for the starts of 16-, 24-, 36- and 48-Across

WELCOMETOMYCRIB

Think of the phrase Snoop Dogg famously said while giving tours of his lavish home.

This clue references the iconic catchphrase "Welcome to my crib" from MTV Cribs, a show where celebrities gave tours of their lavish homes. The second part hints that the first letters of the answers at 16-, 24-, 36-, and 48-Across spell out the same phrase—so each of those answers starts with W, E, L, C, O, M, E, T, O, M, Y, C, R, I, or B in order. It’s a clever way to tie the theme together while nodding to the show’s famous opening line.