Just to point out why this is important, if you grab it and pull it out (like with tweezers or pinched between fingers), you'll basically be injecting the rest of the contents of the little sac attached to the stinger so you'll get more of a dose than if you just left it bee (sorry, couldn't resist ). So, gently scrape it up to lift it out without squeezing.Whatever your political/social preference is, don't pull the stinger out by squeezing it. Scrape it out with the edge of a knife blade. Someone mentioned hooking it out, I imagine they mean getting it out any way you can without squeezing it.
Anyway, if you can see a stinger, there's nothing to scrape out.
I got stung once walking through grass in sandals...not sure I stepped ON the bee, but apparently close enough...got stung on the side of the foot. I'm EXTREMELY careful around bees now (not that I wasn't before, but even more so now)...my entire foot and ankle swelled up, and that's the first sting I ever got. You're not supposed to get an allergic reaction if it's the first sting, but considering that reaction, I don't want to know what happens with the second. Then again, my grandmother would always get a lot of swelling from bee stings like that, and it never got worse like allergic reactions might, just very painful. My dad, on the other hand, would go into anaphylactic shock from bee stings and needed to get an epinephrine shot within minutes of a sting...the time it took from sting to difficulty breathing got shorter with every sting too.