I broke my moms very expensive headphones???! help!!!!!?

ok. so i was studying, cramming for my history finals in 7 hours, and listening to my ipod. i noticed that the sound suddenly sounded weird, different. i unplugged the headphones and then plugged them back in. it continued to sound not as good quality as it did. then i put on another song called "closer to the edge" by 30 seconds to mars. i immediately noticed that something was wrong. when the music played past the intro, i couldn't hear the singer. so at first i thought it was my ipod, but then plugged it into my laptop and went on youtube and played the song through the headphones, and it sounded like it did on my ipod. then i unplugged the headphones and listened to the song through my speakers nd it was fine. i have no idea what i did to the headphones. they seem perfectly fine but its messed up. i dunno what to do, but i do know that my mother will be pissed. please help me fix the headphones PLEASE!!!!