What is the secret knock that gets one in any back door?

Question

What is the secret knock that gets one in any back door?

Answer 1

The morse code knocks which spells, big tip if you let me in.

Answer 2

Six pack of beer or a bottle of wine, soft music, dim lights, tube of K-Y jelly works every time.

Answer 3

Slang term is "shave and a haircut two bits" and it is five knocks followed by two knocks.

Answer 4

Get a log and a few of your friends.  Huddle around the log and bash it through the door, that should do the trick.

Answer 5

What if there is no back door?  Is there one for the front door?

Answer 6

Either being nice and go "PLEASEEEEEEEEEEE?!?!?!?!" Or do the "Shave and a Haircut" thing, you know, dun da da da dun, dun dun!