New Recruit, the movie - Part 2

Brian E. sent me this yummy continuation of New Recruit in which a sailor is handing out 

posing straps that he's had stashed in his bosom.  (How's that for odd?)  Meanwhile, the recruit 

at left is holding what looks like a dirty pair of drawers over his crotch.  Was there such a 

thing as a dirty underwear fetish in 1961?  Or was this just some sort of joke?