A trombone joke is a joke that often involves the numbers 69 and 420. They usually include the majority of dead 2012 memes, and referring to someone's joke as a trombone joke is usually an insult. Of course, some people find this humor hilarious and will take it as a compliment.
Cashier: That will cost you four dollars and twenty cents
Customer: Blaze it
Cashier: Sir, we don't allow trombone jokes in our store. That is a violation of our rules.
Customer: Blaze it
Cashier: Sir, we don't allow trombone jokes in our store. That is a violation of our rules.
by Sockth January 26, 2019