fluffy bunny

Short definition from Wiktionary

Noun

1. 1
   A casual, naive practitioner of Wicca or another neo-pagan religion, especially one deemed to have a superficial understanding.
2. 2
   Synonym of chubby bunny (“competitive eating game”).
3. 3
   Quantum entanglemant that occurs in theory but which seldom (or never) arises because of other physical restrictions.
4. 4
   Used other than figuratively or idiomatically: see fluffy, bunny.