The amount of time that you let the match burn affects the amount of the residual chemicals, and therefore the level of tingling. If you blow the match out almost immediately, most of the chemicals remain, and I would not classify the resulting sensation as tingling. Having spent an overnight hogtied and gagged with this insertion was an event I will not soon forget.I read a story about this in an erotic bdsm a long time ago which really excited me...apparently the chemicals released from the extinguished match produces a tingling sensation![]()