well i don't have braces, so i can't say i've tried that. although back in H.S., i was always texting my friends with my cell phone. (Pretty much the normal day) and I had it on vibrate, so the teacher couldn't hear when I got a message. Well, I'd always stuck it under my leg, whenever the teacher would walk past. But this day, I didn't see her coming until it was almost too late, so I kinda threw it between my legs and crossed them. Suffice to say, my friend chose that EXACT time to text me despite the look I was giving her from across the room, and the phone vibrated. I screeched and jumped out of my seat at the unexpected feeling. And no one will ever let me forget that day nor believe that it was completely INNOCENT.