Drive-through employees probably think they've seen it all when it comes to annoying or just crazy customers, but this girl is here to order her food on a more positive note! 

South Carolina teen, Cecily Hennigan, loved the "McDonald's Drive-Thru Song" originally posted to YouTube byTodrick Hall back in 2010 and decided now was the best time to do it herself!

Hennigan pulls up to the drive-thru, warns she has a long order and just bursts into song.