I live on a lovely, rural road in Canada. We have a mailbox (just for our house) at the end of our drive. Canada Post and couriers deliver to it. I last checked it on Friday afternoon. Sunday evening, we get home from a day out and my 12 year old checked the mailbox because we were expecting a parcel.
He found a ziploc bag containing a couple of spoonfuls of an opaque, cream-coloured liquid. Looked like cream actually. Nothing written on it, and it been delivered by hand, not by the postie or a courier. We did not open the bag. There was no particular smell. I checked with our four immediate neighbours - they did not receive anything weird in their mailboxes. Nor did they see anything.
WTF is it, and why was it in our mailbox? I'm struggling to think of an innocent explanation, or even a sinister one. Just very, very weird.