Can anyone think of a great prank for me to get back at my girlfriend?

I need a good prank to get back at my girlfriend. We keep trading off pranks trying to top each others but this last one she did was amazing. Love that gal, but she needs to get punked! This is the ultimate I have ever seen, but I think it may be too much. http://s49.photobucket.com/albums/f269/nugatory2/gifs/?action=view&current=b91d1ea7.gif