look up any word, like steppin on my dick:
 
7.
The red light blinkin on youre phone when someone called you or have a missed alert
Damn ma red light hasnt blink for a min
by done... December 12, 2008
 
1.
The moment just prior to having uncontrollable diarrhoea. A red light gives you approximately 10 seconds to make it to the bathroom before wherever you are becomes ground zero for a "pooclear" explosion.
I was on the train to work this morning when without warning I got a red light and some fucker was in the bathroom! I had no choice but to go in the sink!
by braceyajax April 23, 2010
 
2.
A way of telling someone to be quiet, or shut up. Or it can be used a way to interrupt.
*Girl Talking Shit*
Girl 1 - OMG. She's such a slut, like I would kick her ass.
Girl 2 - I'm going to have to red light you real quick. Stop talking shit.

OR.
*Two males in fight*
Guy - Is it a scrap? Like what's good? Nize it.
Guy 2 - Nize it? RED LIGHT, RED LIGHT. Come at me then.
by IgnoranceIsBlissTHO February 22, 2012
 
3.
A warning to tell someone when they've said a sexual/racist/sexist/rude comment.
1."There are 2 things I like about THAT sweatshirt....*hint hint* your boobs."
"um, thats a Red Light comment, sir!"

2."Do all black people like fried chicken, delvohn?"
"Red light."
"oh, sorry"
by Vinny Diesel August 07, 2006
 
4.
1. Saying No
2. Negative
3. An immediate Decline

4. Stop
5. A shut down
6. the rejection of a proposal or suggestion
7.antonoym for greenlight
Kelly: why don't you do my Homework tonight ?
Example 1:
Erica : Redlight. I have alot of work too.

Kelly : Yeah I'd figured you'd say No lol .
Example 2
Person 1 : did you hear Max asked Kara out ?

Person 2 : No, what did she say ?

Person 1 : c'mon now dude that's an obvious Red Light
Example 3:
Jerry: do you want to go bowling Friday ?

Peter: Redlight, that's a No go , there is a party !

Jill is rambling so Kate says Redlight can you be be quiet.

etc !!!!!
by PeteyCHase December 11, 2009
 
5.
having sex with a girl on her period
i was red lighting this girl the other day and the condom broke so i got blood all over my dick
by iamthesexorcist November 09, 2009
 
6.
A lighted sign expressing that you should speed up and go through it.
SHOOT! RED LIGHT!
*Engine Revs*
by JessicaVanity August 08, 2007