TROLL IN THE DUNGEON!
From Fandom wank wiki
Thought you ought to know.
The phrase comes from JK Rowling's first Harry Potter novel, in Chapter 10, "Halloween":
| “ | ...Professor Quirrel came sprinting into the hall, his turban askew and terror on his face. Everyone stared as he reached Professor Dumbledore's chair, slumped against the table, and gasped, "Troll — in the dungeons — thought you ought to know."
He then sank to the floor in a dead faint. | ” |
It has since been used in wank reports (usually as the title) in which there are trolls involved, or in the comments when there's wanking inside the house.

