There's a hole in the wall that causes a stone version of whatever you put in it to emerge from the wall.
And this idiot put his
head in there, and got stuck.
The results are humorous.
What would you do if you entered a room to see a face on the wall screaming of unending twisted agony?
“She'd become a governess. It was one of the few jobs a known lady could do. And she'd taken to it well. She'd sworn that if she did indeed ever find herself dancing on rooftops with chimney sweeps she'd beat herself to death with her own umbrella.”
― Hogfather