Finally, you as well as others can waste time on the internet.
This post's internet time waste: Videojug, a collection of How-To videos.
First video I watched here: How to avoid trapped arm whilst cuddling in bed. I've tried a few of these techniques since, and I believe the key is to show the other person this video beforehand so they are unconsciously compliant once the time comes.
Also: charmingly British.