trademan's entrance 

Typically refers to the backdoor and is usually used as slang for anal sex.

So I tell the swamp donkey to sock it before I give her a trunky in the trademan's entrance and have her lick me yardballs.

trademan's entrance by Davenpro October 17, 2005

Use the trademan's entrance

To have sexual intercourse in the anus. Derived from the same source as backdoor. Utilises the common practice of tradespeople using the backdoor to a house so as not to dirty the front entrance or as to be not seen.

I do believe that he is gay and would often use the trademan's entrance.

Use the trademan's entrance by BT_1970 November 28, 2007

tradesman's entrance 

The arse.

Mr Winton wants to deliver the sausage to the tradesman's entrance.

tradesman's entrance by Ian Chode April 4, 2003

Poaching The Tradesman's Entrance 

Stimulating your partner's anus, with fingers and tongue before penetration; licking and teasing the anus in anticipation of penetrating; the act of penetrating the anus as part of foreplay. The act of finger or tongue fucking the anus.

She never expected me to poach the tradesman's entrance but she's glad I did: she like's to know I'll be poaching the tradesman's entrance tonight.

Poaching The Tradesman's Entrance by Evil Incarnate. November 30, 2011