Mouth - "He never shuts his gob"

Your DA,

Your Father, 

See also “Your MA”

How to win any slaging match,

eg, One person says to another, F**K you've a big head,

Second person response " i your DA likes a big head"

Head in this case being a sexual innuendo, referring to the male penis.
Mentally competent - e.g. "He's not the full shilling"
Go F#@k yourself - "Why don't ye go Fack Yourself!"

A woman with a particularly sloppy Vagina

"Hi Fellas, the cocktrough on that thing was like ploughing a field with a pencil."
not good enough for public but good enough for around the house.