Mudlarking

Simply means "inter-racial sex". Can be used as "mud-larking" (hyphenated) or "mudlarking". It is non-derogatory and non-condemnatory. It applies equally to either female or male pursuits. Often it is used when referring to "exploratory" experiences.

"Well, I think she was just in for the mudlark"...

or

"Guess who's been mudlarking just of late?"

mudlarking

The practice of larking in muddy areas (e.g. river banks, beaches) in search of long-forgotten relics.

"Have you ever gone mudlarking to the Thames?"
"Yes, I have, it's absolutely littered with clay pipe stems!!"

Mudlarking

When you are having anal sex and the penetrated partner shits shoving poo into the penis of the penetrative partner.

I tried mudlarking with my gf last night. It kinda felt like sounding but smelt wayy worse.