You can troll your friend with this little program. While you are chatting with your friend on Skype, you can make a quote from your friend, even if he/she didn't say so. So basically, you can quote your friend saying "I'm gay" or any random thing just for fun.
If you want to impersonate your friend on the quote, you have to use the real Skype account name, not the display name. After you are done entering a fake quote, just click on Copy to clipboard and the quote will be copied. Now, go to your Skype chat box, paste it there and see how your friend reacts. Enjoy playing pranks on people!