Sexy sexy lemon pexy is used by
Aussie high
school students, particularly in Sydney. If someone refers to something as sexy sexy lemon pexy it means that they calling it sexy in a joking matter and do not actually consider it sexy. Sexy sexy lemon pexy is also a branch of 'lemon' slang, other 'lemon' slang includes "fancy wancy lemon clancy" or "nasty wasty lemon
pasty".
If your mate showed you a
picture of someone trying to be sexy you would
say "sexy sexy lemon pexy". Or if someone was trying to be sexy/jokingly being sexy you would
say"sexy sexy lemon pexy".