Knock three times
Knock three times
can refer to:
"
Knock Three Times
", a 1970 song by Tony Orlando and Dawn
Knock Three Times
(album)
, a 1971 album by Billy "Crash" Craddock
Knock Three Times
, a 1917 novel by
Marion St. John Webb
Knock Three Times
, a 1968 British
television serial that featured Hattie Jacques
A
tap code
or secret knock