i used to get that, it was becuase i was using a pipe alot. Took a short break and used my bong more and it went away...then i started smoking mreo heavily(daily) and it came back...and then left in a week and i havnt gotten shit from it since.

i smoek anywhere from like 4 times a week to 2 times a day, and smoke cigarettes...occaisionally. Less than one a day, unless im high and out with my friends, then its more like 4 or 5 in a night.