Hardcore oral sex is pretty hot and usually rated xxx. The best sex scene is 2 girls doing one guy and each other at the same time orally. Blow jobs are a big niche in porn since a lot of guys can't get them. Teen blow jobs are even better since older guys can't get oral sex from an 18 or 19 year old girl unless they pay a lot of moeny to some slut hooker. Oral sex and cumshots and cum shot facials are also very pleasing to the web surfer eye.
Pretty girls like to suck real big cocks too.