>>1044064The "plastic thing" is called the mouthpiece, and that "little lip" is called the button. And yes, that's exactly what it's for.
>>1044069Lighter is better than heavier, shorter is better than longer, and bent is better than straight (less leverage, requires less mouth pressure to keep clenched).
Pipes shaped like pic related are very good for clenching.
>>1044071Carnauba wax is the longest lasting natural thing you can put onto your mouthpiece, but most waxes will work.
>>1044075Chapstick has beeswax in it, which works, among other things. Beeswax isn't as durable as carnauba, but it is much more readily available in small quantities.
