the pun was "nicks" vis a vis "underpants," nicks being a british colloquialism for knickers.
Stop being so British. I am a more Brit savvy American than most, I know many more colloquialisms than the majority of my fellow countrymen, but that completely eluded me.
Sir Spectre
Like Master Yoda's speak, Olde English is, yes? Hehmmmmhaha!
-- From the play "Zlothello"