A: Wear something that makes you look like a functioning adult, but not a functioning adult. Think "slightly disheveled yet still vaguely competent."
A: Make awkward eye contact, nod vigorously, then rapidly scan the room for an escape route. If all else fails, feign a sudden interest in the ceiling tiles.
A: No. Unless you're using it as a makeshift slide clicker, in which case, please do not look up from the screen.
For more information on how to survive the weekend, see: