Task: Question Answering
Input (English): Context: i ' ve been having a very good weekend . it started out on friday night , with some birthdays ( delichan and irirshmadcat and possibly someone else ? ) that were celebrated by raucous karaoke followed by mad dancing in the crane lane ( which plays rock / alternative and has a dance floor - who would have guessed ) . i had so much fun : singing , dancing , good fun people - what more is needed for a good night out.last night , we went out again . 
Question: Why are the narrator 's legs hurting so much after the weekend ?
Output (English): They got their groove on .