This is point. Point is best used when another hollow is asking for directions, or when you are asked where you are heading with a concealed weapon and you're facing the united embassy.

The gesture "I won't bite" can be best used when tricking the town fool to draw distance between you, in time for you to deliver their good deal of comeuppance.

Bow is best used when you believe to have stepped in the waste of another animal and you want to check without seeming foolish. Equally it can be used on an unsuspecting child before you batter them.

edit: thanks to Miles

Bow can also be used to check density of the wall, should one be unaware of the density of said wall, and wishes to find out said density.

Wave is a tricky one. If used to say goodbye to an already leaving hollow, they will not see your cordial efforts and you will become the real fool. Whereas, if you use it on an approaching hollow you may seem outgoing and friendly. This is the perfect impression to leave on somebody right before you back-stab them and mangle their spine irreversibly.

The 'No-way' Gesture is most appropriately used when an elderly and senile women falls over and asks for your help.

Fist pump is best used when a women is on slightly raised ground than you and has a sassy attitude, it helps to take them right out.

Joy is a delicate one. I prefer to use this when a very tall man is above me and my fist is just in reach of his testicles.

Hurrah! much like our other two gestures, is a very hostile one. I HIGHLY recommend using when you feel like a 17th century gentleman and seek vengeance on the homosexual that sully's your town with their "high-heels" and "cropped tops". It's guaranteed to deliver one hell of an uppercut.