Trapped
Staying at an old hotel, it was observed that the sash window in my room had, apart from the usual, the following two additional properties:
One could climb through it on to the top of the fire escape stairs.
A bolt which locked it with an opening approximately equal in width to the thickness of the average human adult male neck.

A plan was hatched.

Dare came and knocked on my door, I let him in. I urged him to "take in the view" from the top of the fire escape via the open window which he did.

You have to know your victim and with Dare being a sparks by trade, I invented the perfect bait. "Look at that dodgy junction box down there, that doesn't look very safe" I said. He popped his head inside the window and asked "Where?". "Down there by the floor" I said pointing at the bottom of the wall directly beneath the window. Dare craned his neck downwards to get a better view and before he could say "you fucker" I had pulled down the window and bolted it, he was trapped.

Dare struggled. He tried to push the window up. He tried to pull his head through the window. He could do neither. He was annoyed. He started to threaten me. I pointed out to him that he wasn't in any position to be making threats seeing as he was standing on a fire escape with his head stuck in a window. His threats changed from "I'm going to..." to "When I get out of here, I'm going to...". "In which case you must stay there FOREVER" I told him.

I made him promise not to do anything in retaliation if I let him go, can't remember the exact words but something like "repeat after me, the following":
"I Dare"
"Do solemly swear"
"That I will not"
"Try to exact revenge"
"In any way shape or form"
"On stopmeandslapme"
"In retaliation"
"For him locking me in this window"
"And that"
"I will make him a nice cup of tea"
"And give him the free biscuits from my room"

And he did.
( stopmeandslapme Cometh the hour, cometh your mum, Thu 17 Sep 2009, 17:18, 2 replies)

did you bum him silly before letting him go?

( Smash Monkey lowering the tone of the whole internet, Thu 17 Sep 2009, 23:49, closed)

No
but I humiliated him, made him feel dirty.
( stopmeandslapme Cometh the hour, cometh your mum, Fri 18 Sep 2009, 17:46, closed)