That's funny I got "boooed" once too. I was blowing this guy in the car near Golden Gate Park and he was absolutely huge. I was gagging a bit and then his cumload was much greater than I expected and my instinct was to just spit it all out. He boooed me! it was kind of funny actually because I spit it out on my naked lap where he used his own cum as lube to jack me. Nevertheless I got booed!