Typically, getting invited inside for a night cap is a sexy, tantalizing proposition.

But when True Blood does the asking, and the drink in question is Tru Blood, and the background features a full moon that's meant to represent the influx of werewolves on season three? Well, we'd be careful.

Check out the latest promotional poster for this HBO hit below.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.