I use a trimmer first if its been a while and I usually wait a couple weeks to do it again because I've found when its shorter I'm more likely to get bumps. Lately I've been using Nair. It gets rid of all the hair and I can use it to get rid of my happy trail too without having to worry about hurting my belly ring. Nair isn't for everyone though. If you leave it on too long it will eat away at the top layer of your skin and OUCH does that hurt. Then again cutting yourself down there isn't very nice either. So, whichever way you choose, be careful while you do it. Lots of Luck!
__________________ Friendship is Magic
Cross my heart and hope to fly, stick a cupcake in my eye.
As a guy I like to trim myself short or shave it completely. On girls, I prefer them to be clean shaven or waxed. Bikini waxing can be very painful, though, and it's up to you to decide whether the result is worth the pain.