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.
Killer Croc's appearance in Arkham City was identical to his predecessor appearance, only that Croc was missing the ankle cuffs and his shock collar. Croc was slightly thinner in Arkham City due to lack of fresh food, yet he appeared to be somewhat more muscular than he was in Arkham Asylum.