Oral sex, fellatio, blow jobs, đánh giá nhà cái head, etc, whatever you wanna call it, there are about as many nicknames for the act of blow-jobbery as you can get. And with all these names and slang terms, different techniques and tricks.

While we don’t know off the top of our head, how exactly oral sex was invented, it’s fun to imagine the phrase "you want me to do what now??" being involved somewhere in the timeline. After all, as a concept, putting someone’s privates in your mouth seems like, hmm, it would be awful?? But it’s not! And so all these probable millennia (is this how time works?) later, blow jobs and oral sex are an enjoyable and good part of most sex routines.

Just like the rest of sex, the best way to mix up your BJ routine is to get tips and advice from other people. Which is where we come in. Here are 39 pieces of sage advice from grown women and experts who have been there, done that (like, a lot) and are down to share their wisdom with you. Whether you’re prepping for your first or your 500th blow job, there’s something here for you.