Think you can come up with a funny caption for this image of a triumphant President Obama and Vice President Joe Biden (who Obama dubbed "America's happy warrior") after the president's acceptance speech on Tuesday night? Submit your caption on Facebook, or follow @TheWeek on Twitter and tweet your answers using the hashtag #CaptionTW. We'll post the best responses on Thursday. 

(REUTERS/Larry Downing)

And check out our previous caption contest winners