Weird brand Twitter can't be stopped, and each year it seems to get weirder. Send the kids out of earshot, because this week we're talking about some of the most bizarre and unsettling tweets we've seen over the years, including this past week's "pee jar" incident.  This week's panel: • Kimeko McCoy, Social Editor, Adweek • Ann-Marie Alcántara, Staff Writer, Adweek • David Griner, Creative and Innovation Editor, Adweek