Inkling commented:

Things that make you go hmmmm. Coincidi (isn’t that better than coincidences?) are eerie, even when concerning such ordinary things as mugs. It makes one want to cry, ’twas meant to be! But was it? Does the cosmos care if your father gets the right mug, no disrespect to your father? Or possibly we have some kind of power to make coincidences happen for ourselves? But then why the weird ones? Why????

Well, to play devil’s advocate, let’s assume the cosmos doesn’t care. But just think of all the events that occur in a given day that aren’t coincidental. Could it be that the laws of probability dictate that out of all the events that occur, some are bound to be coincidental, and occasionally even weird? Wouldn’t it be weirder if there were no weird coincidences?