Late in the game Blitz reveals that Dante, a hell hound, humped his leg.
At one point in the job where you retrieve the MKVI, you have to search the desk a secretary who's screwing her boss. In addition to the passcode you need to proceed, your character learns at least three new euphemisms for "sex in the maintenance closet".
After the final Dragonfall mission, you can speak to Aljernon in the street outside his magic shop. After spending the entire campaign putting up with his cryptic speech, you finally get this exchange: