honestly, I don't really like them. They seem scary and at every point ready to split your tongue in 2. + I heared they get infected sometimes? which do not at all seem great times :) I' do like a little nose stone (or piercing, don't know how you call it). It's innocent and you at least don't have to open your mouth to see it :D
Anyway, guess you should ask people who have them and what they think of it..
I really like piercings. But a tongue piercing... I don't really care about. Maybe for getting head. I hear infection is common, so I wouldn't want my girl going through that. And it looks trashy, looks like you love sucking d***. Which is only cool if you're my girl and its my d***. :\
Tongue piercings DO NOT GET INFECTED EASILY. It's only if you're nasty and don't brush your teeth/use mouth wash like the piercer will tell you to. My tongue piercing is my favorite piercing, because it was the fastest to heal, it doesn't get in the way, and it's easy to hide.
I think they CAN look trashy.. on a trashy person. Since I dress up every day, and always look put together, I work the hell out of it.