Did you know that humans are the only creatures that have lips? Not even apes have them. According to one theory, our lips were formed when our mucous membrane peeled apart. It is said to be something that evolved since we started learning how to walk upright, in order to appeal our maturity to the people around us. It may be natural for us to feel that plump, juicy lips are attractive. This time, we have done a special feature on all sorts of lips you can think of, from small, cute ones to juicy, sexy ones. Well then, enjoy!
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