User blog comment:GIR 5 life/GIRS Rap Battles of Infrequency: Dipper and Mabel vs Phineas and Ferb/@comment-4920659-20141210022026

Huh, that P&F title card looks familiar...

This was a good battle. I can't decided for now. Also, when Dipper and Mabel say their names, Dipper says he's Mabel and Mabel says she's Dipper. d: