Solved: on a saturday nite...

like the last 2 times i went into forever 21 i heard this song that i really liked and went something like... singin ut oh on a saturday night... and i think there was something about feckles on the skin but im not sure about the second part! but id greatly appriate help finding the songs name!!

It's Mouthwash by Kate Nash

Isn't it?

thats it! thank u so much : )