nah. but doing it over a period of several hours, you can burn a ton of calories and really dehydrate yourself. not uncommon to hit a buffet afterwards and sleep 12 hours after that.
Nope I have never had that issue and my hubby hasnt either (with me).
I have felt like my head was going to literally explode a few times but no passing out.
not in the last 20 years, but when I was "young, dumn, and full of cum" I had a girlfriend that used to do alot of coke with me, we had several occasions when both our heads weree full that that happened. I assume all the stuff in our bodies and the increased heart rate and BP causd some sort of reaction like that... seemed really cool at the time. At 47, seems auwfully stupid, considering sex was great without it too. But, ceis la vie, I made it through it, and I have some hellatious memories....
now, sometimes I have to turn off the TV if my wife is watching a good show, she has been known to watch over my shoulder! LOL
I never get the "tap" as George Costanza would on Seinfeld when giving oral!