birthday suit vs skinny

birthday suit

noun
  • Nakedness, unclothed skin; an exposure of a human's natural anatomy without clothing. 

  • Used other than figuratively or idiomatically: see birthday, suit. 

skinny

noun
  • A state of nakedness; nudity. 

  • The details or facts; especially, those obtained by gossip or rumor. 

  • A low-fat serving of coffee. 

  • A skinny being. 

adj
  • thin, generally in a negative sense (as opposed to slim, which is thin in a positive sense). 

  • Naked; nude (chiefly used in the phrase skinny dipping). 

  • tight-fitting 

  • Synonym of thin (“type of shot where the ball is struck by the bottom part of the club head”) 

  • Having reduced fat or calories. 

verb
  • To reduce or cut down. 

How often have the words birthday suit and skinny occurred in a corpus of books? (source: Google Ngram Viewer )