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to rat on someone, or to report on them, usually to the police
Leave the singin' to Sinatra you fuckin canary!
sing by i love dicks December 4, 2003
Related Words
(v.) To use one's vocal chords to make musical tones.


What most tv talent show contestants cannot do very well.
sing by Kung-Fu Jesus May 12, 2004
SING stands for Sorry Im Not Gay. Its when young girls say something like, I love you! and then they say SING though! to tell the other person that it is in a no homo way.
Person 1: Hey man! I love you, but SING!
Person 2: SING too :)
SING by thehipsterhorse December 11, 2012
A theater competition where everything is student-run, meaning its student-written, student-directed, and all the acting, dance, and tech crews are students. The competition is between Seniors, Juniors, and Soph-Frosh. While the quality of the shows costumes, sets, etc are lower than that of normal theater productions, and it's generally a contest to see how many half-naked girls they can get on stage and how many sex jokes can be crammed into 55 minutes, it is in fact a lot of fun. Performed at Stuyvesant, Midwood, and other schools.
Go STUY JUNIOR SING 2005!! WHOOOOOT!!!
SING! by Jackknife February 14, 2005
when you let out your voice in a harmony full melody
Person 1: Sing.
Person 2: OK.
Person3:yay!
Person 2: Lalalaaaaaaa
Sing by EXPLAIN it 2 u October 14, 2020
people with good voices unlike Selena gomez
selena is such a bitch she cant sing have no idea why that many people follow her Beyonces way better
sing by jessica taro March 16, 2017