An elephant was drinking out of the river one day when he spotted a turtle lying fast asleep on a log. The elephant walked over and kicked the unsuspecting turtle clear across the river. A passing giraffe who happened to see...

Can you find the empty mug in this puzzle? It sounds easier than it is. At first glance, it seems impossible to find a mug with nothing in it. All of the mugs appear to have some kind of drink...