Rope snooker 

The act of attempting to penetrate another living being with a flaccid penis. As difficult to achieve as attempting to play snooker with a piece of rope. Often happens on rounds 2+ of sexual activity within a short period of time, or when one has consumed too much alcohol but will not be deterred.

Luca tried shagging this bird off tinder 3 times in one night but ended up playing rope snooker.

I thought I'd finally end my dry spell last night but after 15 pints all I could do was practise some rope snooker.

Rope snooker by Big bad Ben June 13, 2016

Snooker with a rope 

When the male sex organ resembles a piece of rope immediately before or during Love making instead of being hard like a snooker que.

Everything was going fine john, we had a few drinks than a bit of a kiss and a cuddle but when it came down to the business it was like playing snooker with a rope.

Snooker with a rope by T.McCormnick October 8, 2007