This one was actually from a friend of mine, who is not even a Star Wars fan.
After walking in on my girlfriend and I in a compromising situation (with her in the approximate pose above), his favourite joke for the next week or so was to bend down and say "Help me Obi-Wan Kenobi, you're my only hope!". I couldn't help but think it was hilarious and that we also deserved it for being in the kitchen at the time...