Can I use ice cubes to improve oral sex?

I see that in several messages and answers, that reference is made to oral sex accompanied by the use of ice cubes. I'm pretty ignorant about this and would be very grateful to you if you would tell me more about this. My boyfriend and I have a very good sex life and we enjoy making love, but we're also on the look-out for new things to try. I've asked my friends about this and some of them thought it was a joke! Thanks for the help.


Do I have urethritis or something else?

My boyfriend has had pain during urination and ejaculation. We have been only with each other for the past year and neither of us have STIs. The info I have found on the internet makes me believe maybe he has urethritis. My question is, can you cause damage to the urethra during oral sex? I don't want to get too personal, so I will leave it alone, but I want to know, can you cause damage due to any force to the urethral opening?


How can I stay awake longer to party more?

Recently (the last six months or so) I've been getting really tired after a couple of drinks (let's say three or four). By eleven at night, I'm ready to call it quits. My friends and boyfriend poke fun at me because I usually head home before they do. How can I last longer in a healthy way? I definitely try to drink water throughout the night, but is there anything else?