Fun to watch, but I must admit, my wife used to gag a bit and spit it out the first few times she sucked my cock, but now she just swallows it down and keeps on sucking until the last drop is out of it and has done for years.
Nothing is better than when a girl gags when the first warm spurt hits her gullet. Eyes water, letting me empty my nuts in her mouth. Girls that fucking swallow.