A danny is a finger puppet. The derivation is from the movie The Shining, when little Danny speaks to his finger and says in a satanic voice- Danny isn't here right now, Mrs. Torrance. Danny is appropriate to be used for all types of finger puppets. Example: I bought the cutest little danny today, a caterpillar.
DANNY
Meaning of DANNY in English
Slang English vocab. Английский сленговый словарь. 2012