Today's BWOTD is one I hear all the time when I am subbing Pre-K or Kindergarten grades at school:
"Can I go potty Miss Sarah"
'Potty' = loopy or nuts
So this always makes me smile, because I want to reply "no you definitely can't sit back down at your desk please!" LOL
But we do also refer to a childs small plastic toilet as a potty, so I knew what they mean't the first time I heard this. But it still conjures up scary images of the whole class going nuts :-)
In the UK it is more likely to be used as:
"That woman is completely potty"