A reference to Lady Capulet (q.v. Shakespear's Romeo and Juliet), which just so sounds like some marketeer's name for some form of internal female contraception (q.v. dutch cap, cap)
"...you know I said I saw a really fit bird at work today? Well, it's no good, love, I just can't get her out of my head, so I've got a constant Japanese voting system. Pop Juliet's Mother in and let's see if we can't fuck this boner away...".