The term 'Blue Stuff' can refer to a variety of different things. The crossword solutions for this term include PORNO (5 letters), SMUT (4 letters), PORN (4 letters), SKY (3 letters), EROTICA (7 letters), and DENIM (5 letters). Porno, SMUT, and porn are all terms used to describe sexually explicit material, while erotica is a more subtle form of sexual content. SKY and DENIM are both shades of blue, with SKY being the lighter of the two.