How to unplug sink full of puke HELP ASAP?

I AM STAYING AT MY AUNTIES TO TAKE CARE OF HER HOUSE WHILE SHE IS AWAY AND ENDED UP HAVING A HUGE PARTY AND SOME CHICK ENDED UP PUKING IN THE SINK AND NOW I CAN NOT GET THE DRAIN UNPLUGED. I JUST TRIED WASHING IR=T DOWN BUT IT IS JUST MADFE IT WORSE. MY AUNT IS COMING HOME A DAY EARLY I FOUND OUT AND SHE WILL BE HEAR IN 3 HOURS. THERE ARE NO PLUMBERS OPEN. WILL LIQUID PLUMBER WORK? I DO NOT WANT TO GET IN ****. HELP....!!!!!!!!!!!!!!!!!!!!