Originally Posted By: UTAlumnus
Only if you don't manage to pinch the venom sack while doing it. Doing so will do in a hurry what its already doing slowly: Pumping the contents through the stinger into you.

In the article I referenced, the researchers mention this common advice as one reason to test out the difference between pinching vs scraping because they say that the anatomy of a stinger (including the attached venom sac) does not support this commonly held belief. Their results seem to confirm their skepticism that pinching and grabbing the stinger does not increase the amount of envenomization, so however you get the stinger out, do it as quickly as possible and don't waste time trying to find a credit card, tweezers, or other scraping tool.