How do you have oral sex?

my boyfriend wants to eat me out. what exactly is it?
and giving head.. what really do you do?

It means your bf wants to go down on you, meaning eating or licking your vagina until you reach orgasm.

Giving head is when you give your bf oral pleasure by putting penis in your mouth and licking and sucking it until he reaches his peak also.

what locoluna said.
if you dont feel comfortable with it, dont do it. you can also try going to urbandictionary.com
and time in what ever term you dont understand and it'll tell you what it meens, its a very handy site.

There's no right or wrong way to have oral sex. People like different things in bed. If you're not comfortable experimenting with someone or asking them what they like, then I would not suggest doing anything sexual with them.