drop-dead vs lulu

drop-dead

adv
  • Absolutely final; being the deadline, especially in relation to a date set out in a contract upon which adverse consequences will flow if the contract has not been fulfilled. 

  • Very impressively or spectacularly. 

lulu

noun
  • A very bad mistake or error. 

  • A very attractive or alluring person. 

  • A fixed allowance paid to a legislator in lieu of reimbursement for actual expenses. 

  • A remarkable person, object or idea. 

How often have the words drop-dead and lulu occurred in a corpus of books? (source: Google Ngram Viewer )