Behold now, this city is near to flee unto (literally, thither), and it is a little one: Oh, let me escape thither, (is it not a little one?) and my soul shall live. Lot's meaning was that since Zoar was the smallest of the cities of the Pentapolis, it would not be a great demand on God's mercy to spare it, and it would save him from further exertions for his safety.
A singular display of moral obtuseness and indolent selfishness on the part of Lot.