yellow light effect 

When a law or rule has the dubious distinction of making you do the opposite of what was intended.

A literal example of the yellow light effect is to speed up when you see a yellow light. Figuratively, you do the opposite.

yellow light effect by Stephan Smolka April 3, 2009

lightbulb tan

A lightbulb tan is a tan gained from spending lots of time under a lightbulb. It usually results in people who are abnormally white. People who have lightbulb tans live in places that are in the middle of nowhere, are usually completely antisocial, and seem to never come out of their bright caves.

Rick: Hey where's Jim?

Bob: He is working on his lightbulb tan.
Rick: That antisocial New Jerseyite.

lightbulb tan by that guy888888 December 25, 2010

Top at the red light 

When you and your boyfriend get to a red let, so you give him that sloppy zoppy toppy-3000. The gluck gluck.

Friends talking: What does top at the red light mean?
Other friend responding: Search it up on urban dictionary.

Top at the red light by nickiminajforprez February 17, 2021

Lightmare 

A nightmare that occurs during the day, when it's light outside

I had a scary lightmare during my 3pm nap

Lightmare by 5ingularity February 23, 2019

Light academia

The light version of Dark academia. It involves an interest in literature, music, art, history and learning.

Colours:

Browns
Cream
Rose
Burgundy
Green
Yellow
Navy Blue
Beige
Off-white
Black
White

My aesthetic is Light academia

Light academia by Kaz00 April 16, 2022

lightminute 

The measured distance of light that travels in a period of a minute, approximately 17,987,547 kilometers.

Mars can be reached in 7.8 lightminutes.

lightminute by 1m1m0 September 3, 2022

Orgasmic Light

Light flashes seen during orgasm

Oh the lights Oh the lights Oh the lights! I am seeing Orgasmic Light

Orgasmic Light by saltlick April 12, 2011