Not exactly Goodison but back in the 1980s we went to an away game in London and were staying at a mates just outside the capital.
We took the train from his to the match and stayed in town for a session, as you do.
Anyway, we got to the station in time to get the last train back to where he lived when one of the lads said he needed a dump and decided to use the station bogs.
About 5 mins later, he returned with a look of shock, horror and confusion.
"What's up?" we asked him.
He went on to tell us that he got in the cubicle, undid his strides and plonked himself down when all of a sudden through a hole in the dividing wall to the next cubicle emerged this "erect member"...
His immediate response was to pucker up his ring and all thoughts of dropping a log off left his mind as he dragged his kecks up and got out of there pronto.
As he was telling us, through the tears of laughter we saw this "city gent" type character emerge from the same convenience and launched a tirade of stick in his direction as he scuttled off.
I doubt anything like that would happen at Goodison, mind.
Besides there being no glory holes as far as I'm aware (The OP can confirm this, I would imagine), I wouldn't expect any perpetrator to escape unharmed.