Brown oily liquid on one hitter?

I was smoking out of a metal one hitter pipe that is colored to look like a cigarette. after a few hits I realized that the orange part (supposed to look like the orange butt of a ciggarette) had some brownish oily liquid on it that was coming off on my fingers and lips. it smells strong and chemical ish. and tasted bad. What could this be? also, just saying, i had held the lighter against it for a really long time. could it have just been the coloring melting? ive taken smaller hits since then and it hasnt happened again. (btw. no discussion on what i was smoking... lol)