Redman made serious bank on his Christina Aguilera collab. More than two decades after “Dirrty” was released, Redman shed more light on the song’s long-lasting impact—especially on his bank account.

This week’s Fresh Pair guest, Redman, is one of the true treasures of the mid-’90s, when hip-hop was rugged and raw, but still had a sense of humor about itself. That description could very well apply ...