Sometimes, the lock on our front door refuses to turn all the way, and you have to really work the key to get the darn thing to lock. I'm thinking that it probably looks quite suspicious to passers by: Some random teenager unsuccessfully trying to work a lock for a house where no one's home. TOTALLY DOESN'T LOOK LIKE I'M BREAKING INTO MY OWN HOUSE.
Well, I once had to climb through an upstairs window to get home. So there I am, standing on the kitchen roof trying to get inside and then I hear this gasp. A little kid is staring up at me, and then yells "You shouldn't burgle people, it's not nice." Then runs off. FML
Or your host family overseas. Man, that was awkward.