Smooth brain

Smooth brain is an insult that refers to an unintelligent person. Supposedly, the intricacy of one's knowledge is represented by the wrinkles on their brain. If their brain is smooth and lacks wrinkles, their knowledge lacks intricacy, and they are therefore stupid.

What a smooth brain that person is.

by GenericGuy3456 May 25, 2024

Stay Smooth

Used as a word of departure; it means that the person saying it wishes for you to remain calm and keep your life in tact until they see you again (smooth not rough).

Jack: Alright, well I think it's time for me to head home
Justin: Alright, stay smooth bro
Jack: I'll try

by Diggy070 October 3, 2023

Smooth entry

The art of penetrating a person , after applying the right amount of liquor. Can be combined with roofies.

Jack: Steve made a smooth entry last night.

Peter: Did you sell him the roofies?
Jack: Nah, he used booz this time.

by Deemeister February 25, 2011

Smooth Operator

Smooth Operator (noun): /smu ð ˈɒp.ə.reɪ.tər/ — one who navigates high-stakes situations with effortless finesse, calculated calm, and a smirk that knows more than it says; most commonly associated with Carlos Sainz, who turned a radio joke into a personal brand and a global mood. See also: Carlos Sainz.

During the race, Carlos Sainz lived up to his nickname — a true smooth operator, calm, precise, and always one step ahead.

by f1fanboi July 6, 2025

Smooth truck

A truck that kills smoothly.

You've been struck by a SMOOTH TRUCK,it kills smoothly.

by Wolverine and cat!!!!!! REEEEE February 5, 2021

hairy smooth

A slap, first with the back of the hand (hairy) followed by a slap with the palm

You’ll get a hairy smooth if you don’t behave!

by Pig boy and the froot May 18, 2024

The Smooth Criminal

When you and another person are about to have sex, and you repeatedly start asking “Annie, are you okay?” You keep asking this, regardless of what the person says, until they’re no longer in the mood for sex.

“So last weekend was actually great, I used the Smooth Criminal to great effect, and now none of her friends will talk to me, either. Peace and quiet is in store for me.

by anon415 February 4, 2023