Quoting ~mama~:" You should teach her the one for bathroom, my 4 year old told me his teacher taught him so I don't know if it's right but it's like the sign for N and shaking it back and forth. "
Quoting thats me. :" be careful with that though...some kids that are taught to sign with all words, may not want to use their ... [snip!] ... in sign, and he was 3 years old and wouldn't talk, and there wasn't anything wrong with him, just it was easier to sign...."