Sentence:  The way his red rubber <WSD>lips</WSD> were stretched across his pearly little teeth I though he was only having a little joke , but , no , he wanted me to bend down from the roar of wind so he could roar something into my ear . 
Meaning of the word marked with <WSD> tags:  either of two fleshy folds of tissue that surround the mouth and play a role in speaking