[Discussion] "True Blood"... I have some questions. Anyone care to share their ideas? (Possible spoilers, I guess?)

First off, absolutely love the show! (don't ask me who my favorite character is).

Ok, questions... Vampires. If they're dead, have no heart, no bodily fluids, etc... How come they like to fuck so much? I mean I do too, but damn... cold, dry, soulless body? No thanks. Brings up another point... How is their aim so perfect? They decide to get it on, and -BLAM!-... He's in, she's moaning, etc.... Too perfect.

Another question. The werewolves... do their human forms have fleas?

Another question. Sam the bartender. The shifter, ya know? If he shifts into, say... a snake. Does he just look like a snake, or is he actually a snake, venom and all?

Another one about Sam. When he was a fly, and flew into what's-her-fuck's mouth and shifted back to human, therefore pretty much exploding her skull... In that stage between fly and human, wouldn't Sam, being so small and with so much pressure inside the skull, be squashed to death inside the woman's head?