Patting the dog through the letterbox 

The act of playing with a womans lady area while she is still wearing underwear.

Dude, that bar skank was up for it last night. I was patting the dog through the letterbox right there in the VIP!

Patting the dog through the letterbox by Berkut666 October 27, 2011

dead letterbox 

A prearranged place for a swap or drop of information or goods. Particularly common usage with Spies or drug dealers.

"The Microfilm was left at the dead letterbox as arranged. We can now release the prisoner."

dead letterbox by Andy 696969 October 17, 2006

Feed the dog through the letterbox

To push your hand down behind a woman's underwear and access her lady bits from the front while not removing dress/skirt/trousers.

I can't believe that Madonna let Vanilla Ice feed the dog through the letterbox in her Sex book.

Feed the dog through the letterbox by Ice Ice Ice Baby January 9, 2009

letterbox 

a place to put mail in :D

letterbox by booka_430 April 1, 2003

hairy letterbox 

an untrimmed womans genitalia

damn did she have a hairy letterbox !!

hairy letterbox by mac... January 14, 2006

letterbox ninjas 

a letter box ninja is a Female muslim that is wearing all its out fit thing often seen in leicester city the theory is that they are ninjas and if u wer to paint them red then they would be letterboxes

Have u seen sanjs mum she looks like a right ninja
o is she one of them letterbox ninjas

letterbox ninjas by Ranjit the best August 6, 2008

Letterboxing 

The act of placing your erect Penis inside a strangers letterbox ringing the doorbell and hoping for a blowjob.

I done some serious letterboxing last night.

Letterboxing by Ben Lyncher October 29, 2011