Continuing our App Friday feature, today we’re focussing on possibly the funniest iPhone app we’ve ever seen thanks to mobile-ent.biz, who wrote it up this morning. T-Pain is an American rapper who’s appeared in one of our favourite videos of all time, I’m on a boat. Recently T-Pain teamed up with Smule, the company behind the Ocarina app, to create the I am T-Pain iPhone app. Combining pitch correcting software with T-Pain lyrics, the app allows you to sing along to T-Pain tracks, record it and then share it with friends on Facebook and MySpace. It costs £1.79 and is available to download from the iPhone app store (link).