Midnight pot holing 

Usually restricted to times of intense inebriation, foreplay is forgone the decision is taken to go down on her straight away. What you next experience can only be likened to 'pot holing'. You feel like you could take a stroll through her huge vaginal cavity, and it's lined with the sort of growths and protuberances that you need to be wearing a hard hat to protect yourself. The stench is like thousand-year-old stagnant water, preventing you from breathing properly and claustrophobia is only two steps behind you.
The only way to feel clean again after the experience is to shower for two weeks solid in boiling water.

Guy1: Dude, did you REALLY get off with that beast last night?

Guy2: I can't talk about it - it was midnight pot holing in the extreme....

Midnight pot holing by BigBadJonnyboy August 24, 2011

Potholing 

The practice of dunking your testicles in another person's anus

"Sophie was quite surprised to hear that Jonny was potholing her friend in the library toilets"

Potholing by MaximillianPower March 18, 2015

potholing 

To have sex with a cheap woman.
To delve into deep dark damp cavernous cavity. From the common use of potholing refering to caving but with reference to a loose woman rather than a geological formation.

Dave might be desperate but he still wouldnt resort to potholing.

potholing by spudman1977 January 26, 2008

Potholing 

Whilst in a semi conscious sleep state, you scrat your anus, often leading to being second knuckle deep before you wake up shame ridden

Mark often wakes up to wash his hands in the dark after an evenings potholing

Potholing by Gamma lover May 4, 2018

Portholing

When two prolapsed anuses touch each other

Steve and Greg had an amazing time portholing last night

Portholing by Bungwholer July 4, 2023