How do you say you need the toilet in sign language?

I've never seen the first answer, but here's a more used one.....

1. point or flat hand to the person [you]

2. place a curved index finger in front of the face, and pull down [need]

3. *there are 2 signs for toilet -- 1- make a T (stick the thumb between the first 2 fingers) and shake it, or 2- cross the first 2 fingers and tap down to the left then right.

--------------------------------------------------------------------------------------

you raise your right hand to your left shoulder and scratch your left shoulder with your right index finger