Finger Fumblers:

A finger fumbler is like a tongue twister for the fingers
 

Finger Fumbler: W6V29F1D

Note that the "6" and the "9" are shown using the tapped versions to distinguish them from "W" and "F."

The 2 and the 1 are shown palm back.

For more discussion on the W6V29F1D finger fumbler, see: W6V29F1D Finger Fumbler
 

Notes: 

Question: 
Are phrases such as "DRY, UGLY, SUMMER" and/or  or "99 PEPPER FRENCH-FRY" (99 peppered French fries) considered finger fumbers?

Response:
Repeated handshapes are "alliteration." 
Alliteration is different from a finger fumbler in that alliteration is very easy (and fun!) to do.