I think there's an audience for an app that would allow a Skype user to make it appear as if there are delays or interruptions so she could take a swig of bourbon, glance at some notes, or run and put on some pants. I'd buy it.
If you're using a desktop computer, plug it into a power strip with the "Off" switch next to your foot. Turn the computer off while you're in the middle of a sentence and they'll think the internet connection went out.
A little tougher to do with a laptop, as it doesn't disconnect when the power goes out. To achieve the same effect, remove the battery and run it on the power adaptor only.
Jon