I think it'd depend on the circumstances.
If you pushed yourself up against the window, it might be different to if you were just putting the kettle on.

*looks for lawyer*
( Druid, Sun 3 Jul 2005, 21:30, archived)

You were just cleaning the windows
and you dropped the cloth and when you bent down to pick it up, your underpants fell off and you clutched at your bum in shock and inadvertantly pulled your cheeks apart.
( Comma, Sun 3 Jul 2005, 21:34, archived)

I once painted the wall above a curtainless window
wearing only underwear, and I was 7 months pregnant
( Jadeviper was still alive on, Sun 3 Jul 2005, 21:36, archived)