What song does Rowley sing in Diary of a Wimpy Kid Rodrick Rules?

In the movie "Diary of a Wimpy Kid: Rodrick Rules", Rowley does not sing any song.

However, he does play a song on his keyboard during the school talent show. It's a silly, rambling song about the "Love Shack" but Rowley's rendition is comically off-key.

Maybe you're thinking of another song from the movie?