When someone refers to someone looking hot or looking sexy.
Shirley is lusty, I would like to fuck her!
ADV: when one is extremely horny and is willing to fuck anything with a pulse. Term is used only after one has been deprived of sex for over a 10 year period or after someone is cryogenically frozen for 4.5 years. In these extreme situations the reproductive organs have been so ignored and overlooked that sex is required for survival. Being Lusty is a survival method
Teddy: I've been very lusty lately
Joey: That's because your still a virgin at the age of 62.
Teddy: YO IM GONNA GO FUCK THAT SQUIRREL!