66 is a number command of 67 Kid, used to build up tension before 67 in a counting scenario. It is one of few number commands without phrases, although it technically has 100 (or 2 unique), all of which contain "Go on...".
Command
Saying 66 will prompt a "Go on..." from 67 Kid, and rarely an emoji at the end.
Phrases
Go on...
Go on... :Sixseven:
Trivia
66 techincally has 100 phrases due to the probability.
66 doesn't contribute to the betrayed counter.
See Also
68