THE WIBBLE - source: www.spherculism.net, written by Matt Terry.

Wibble = throw, tapback, tapback, tapback, tapback, tapback....
where each 'tapback' is hitting the handle of the poi back the way it came.

If you make contact further toward the center of the poi body the poi won't wibble back straight away, instead it will do 1 wrap around your arm, then wibble off again. This doesn't have a specific wibbling name, it's just a wibble as far as i'm concerned, perhaps a propellor followed by a wibble if you want to get technical.

But 'Wibbling' is more 'a familiy' or 'style' of moves than a single specific thing.

Propellor = poi spinning round constantly in same direction, exactly the same as the 'propellor' devilstick move.

Doing this is tricky and releys on you making contact with the poi at the center of gravity (CoG), then sliding up toward the handle, poi jumps off a little, reset hand position to CoG. I find using 2 fingers is best.

So generally if the poi continues in the same direction then it's a propellor, if it changes direction it's a wibble, the 2 are closely related.

Both are considered 'Contact Poi' since you can make the 'throw' so tiny that the poi remains in contact with your body. Or you can throw it high and continue the propellor or wibble.

oh yeah:

wibble = 1 spin
dibble = 2 spins

ibble was a name given to the move where you tap the tail, then tap the head, so :

ibble = 1/2 spin (ie a proper juggling tapback)