Yea, that's happened to me. A few months after becoming a frequent smoker it'd happen sometimes on occassion, but now it doesn't happen anymore. I think it was me just coughing after taking too big a hit because it'd only happen after colughing quite hard. It used to scare the hell outta me... it'd make my heart race really fast... but when I started feeling the bud, it'd subside. Like I said, it no longer happens, but PeAcE!!! I gotta go smoke a FAT ASS J Stay cool.

BoMb