Following his victory over Mitt Romney in the U.S. presidential election, Barack Obama gave an acceptance speech in which he promised Americans that 'the best is yet to come'.
In this cartoon from The Sun, Andy Davey shows Obama addressing a line of people made homeless by Hurricane Sandy who are queueing (or waiting in line, if you're American) for soup. He tells them, "Americans! You ain't seen nothin' — the best is yet to come!" The humour comes from the ironic contrast between Obama's words of optimism and the scene of devastation around him.
1. In informal speech, people, especially Americans, sometimes use ain't instead of 'am not', 'aren't, 'isn't', 'haven't', and 'hasn't'. Some people consider this use to be incorrect. Obama also uses a double negative. The 'correct' version here would be 'you haven't seen anything'.
2. If you say that something is yet to happen, you mean that it hasn't happened yet, but you expect it to. • We've yet to see this kind of game for iPad with Retina display. You could also say 'still to come'.