Of course the second one is more SEO friendly, since the first one contains keywords that are too broad. By the way, you should not use the tags like big boobs, big tits, because these are just synonyms and if you use them like that, just repeating, then you might not get as much organic traffic, so just pick one and stick with it. Also, if your site is about Asian porn, then you do not have to add the “Asian” word in categories or tags. You can take a look at other sites, MyLust.com is a good example of how you should tag your videos.