Yeah so I've just got this new american glass upline bong. It's a nice peice and I enjoy smoking through it but it seems to get oiled up a lot from a bong or two. And recently I've been gettin oily shit on my lips. I clean everyday with iso so it's clean all the time. Is it the weed I smoke or the fact that the mouthpiece is really small? Edit: just to be clear the tube and mouthpeice is really small in diameter like i cant even stick my little finger down the tube.