How do I suck someone's balls?

I've always come to this site to either browse through others' problems and compare them to my own and because I've been sexually curious for as long as I can remember. Recently, a guy I've been friends with and I have started to "get to know each other." Last night, this question arose: How exactly do you "suck balls" and what are the benefits? I looked through everyone's questions, and I didn't see this one.


Is it safe to get a UV tattoo?

A friend of a friend told me all about this ultraviolet/blacklight tattoo method. It was deemed unsafe earlier when it first came out, but apparently now it is completely safe. This friend of a friend said she does these tattoos all the time now and is really good about not scarring. So I'm not worried about anything like scarring being seen, I'm just worried about getting cancer and other accusations when ultraviolet tattoo first came out.


Why are my nipples hard?

Is there a reason behind spontaneous nipple hard-ons? Lately one of my nipples just stays that way for the majority of the day. It's irritating! Is there a reason behind it?


Is it okay for my partner to ejaculate inside of me during unprotected anal sex?

My fiance and I frequently enjoy anal sex. We no longer use condoms with each other during vaginal sex or anal sex. He enjoys ejaculating in me during anal sex and I don't mind it. Immediately afterwards I go to the bathroom and get out his cum, but sometimes it takes awhile for it to all come out. I'm wondering if this is OK to do or if it is harmful to my body because I do enjoy it and would like to continue. I just don't know anyone else who does this and wonder if it could harm me in any way. I've been wondering so much about it lately that I don't want to have anal sex anymore because I'm worried.