Here is a spicy riddle from Bugra from Amsterdam:
A tortoise is walking home to his well deserved piece of lettuce after his long working day. The distance to its home is 10 km. Since tortoises aren't usually in a hurry, he decided to take a five-minute break after walking half of the distance. The tortoise repeats this: each time it has walked half the remaining distance it takes a five minute break before continuing.
Will this tortoise ever get home? Explain your answer!