Possible Clues:

• Stretches out
• Spreads out
• Keeps going and going, as a city
• Super - not even breaking laws - lies awkwardly
• Reflected signal's limits with distortions showing untidy spreads
• Spreads untidily
• Takes the whole couch, say
• Sits haphazardly
• Some urban expansions
• Stretches, in a way