to tell on someone is to inform his or her parent/guardian/superior/jedi that they were recently caught doing the hibbitygibbity with their cousin and are now acting sheepish.
Synonyms for telling on
On this page, you will find 30 slang terms related to telling on. Some of the top words include: DROP A DIME, Krackalakin, fronted, behenchod, dob, and 25 more.