Are the lips wastegial organ or …

Who said Lips are a wastegial organ. In human body , nothing is wastegial organ.
Lips have many purpose:
1. During Food intake
2. During articulation or speaking
3. A tactile organ
4. An erogenous zone.
 

Clinical significance

As an organ of the body, the lip can be a focus of disease or show symptoms of a disease:

• One of the most frequent changes of the lips is a blue coloring due to <a href="https://en.wikipedia.org/wiki/Cyanosis" title="Cyanosis">cyanosis</a>; the blood contains less oxygen, and thus has a dark red to blue color, which shows through the thin skin. Cyanosis is the reason why corpses sometimes have blue lips. In cold weather cyanosis can appear, so especially in the winter, blue lips may not be an uncommon sight.
• Inflammation of the lips is termed <a href="https://en.wikipedia.org/wiki/Cheilitis" title="Cheilitis">cheilitis</a>. This can be in several forms such as <a href="https://en.wikipedia.org/wiki/Chapped_lips" title="Chapped lips">chapped lips</a> (dry, peeling lips), <a href="https://en.wikipedia.org/wiki/Angular_cheilitis" title="Angular cheilitis">angular cheilitis</a> (inflammation of the corners of the mouth), <a href="https://en.wikipedia.org/wiki/Herpes_labialis" title="Herpes labialis">herpes labialis</a> (cold sore, a form of <a href="https://en.wikipedia.org/wiki/Herpes_simplex" title="Herpes simplex">herpes simplex</a>) and <a href="https://en.wikipedia.org/wiki/Actinic_cheilitis" title="Actinic cheilitis">actinic cheilitis</a> (chronically sun damaged lips).

<a href="https://en.wikipedia.org/wiki/File:Cleft_lip_child.jpg"></a>

A child with <a href="https://en.wikipedia.org/wiki/Cleft_lip_and_palate#Cleft_lip" title="Cleft lip and palate">cleft lip</a>

• <a href="https://en.wikipedia.org/wiki/Cleft_lip_and_palate#Cleft_lip" title="Cleft lip and palate">Cleft lip</a> is a type of <a href="https://en.wikipedia.org/wiki/Birth_defect" title="Birth defect">birth defect</a> that can be successfully treated with surgery.
• <a href="https://en.wikipedia.org/wiki/Carcinoma" title="Carcinoma">Carcinoma</a> (a malignant cancer that arises from epithelial cells) at the lips, is caused predominantly by using tobacco and overexposure of sunlight. Alcohol appears to increase the carcinoma risk associated with tobacco use. It is most often a diffuse and often hyperkeratinised lesion, occasionally has the form of nodules and grows infiltratively, and can also be a combination of the two types. It more often occurs at the lower lip, where it is also much more malign. The lower lip carcinoma is exclusively <a href="https://en.wikipedia.org/wiki/Planocellular_carcinoma" title="Planocellular carcinoma">planocellular carcinoma</a>, whereas at the upper lip, it can also be <a href="https://en.wikipedia.org/wiki/Basocellular_carcinoma" title="Basocellular carcinoma">basocellular carcinoma</a>.