No, it is not possible to contract the typical STDs, such as syphilis, gonorrhea, chlamydia, hepatitis B, etc. from wearing someone else's dirty underwear. However crabs and scabies, may be spread in this fashion.
Tick-tock-tick-tock-tick-tock. The Crocodile or Tick-Tock the Crocodile is a crocodile that stalks Captain Hook. At some point Peter Pan had a fight with Captain Hook in which he cut Hook's left hand off and fed it to the crocodile.
Main Article: Killer Croc (The Batman) Killer Croc appears in The Batman voiced by Ron Perlman (who also voiced Adventure Time's Lich, Batman's Clayface, and Teen Titans' Slade). This version of Croc is much more crocodilan than other incarnations of the character (and probably the most intelligent of them all).