It means the KKK (Ku Klux Klan) which was an American white supremacist hate group. The reason 3 11 stands for 3, 11s with 11 being a K, the eleventh letter of the alphabet.
Guy 1: Yoo how do we talk about the KKK without sounding sus?
Guy 2: How about we come up with some secret code with letters from the alphabet and numbers?
Guy 1: I guess we could do 3 11.
Guy 2: How does that mean KKK?
Guy 1: 3, 11s with 11 being the eleventh letter of the alphabet.
Guy 2: Oh that makes sense. Speaking of which should we join the 3 11.
by Pork on a Stick December 8, 2019
Get the 3 11 mug.
When one person fell in love with another, it was iffy in the beginning but overall these two people will be together for ever
3-11-11 A short girl meets a tall guy and they fall in love (+-)
by Anyomynous123321 July 22, 2011
Get the 3-11-11 mug.
The best time to sneak into the back of your school to go sledding. However, before sledding, you must perform satanic rituals and sacrifice a squirrel. Once that is done you are free to sled if the back of your school has a hill.

Rule: you must meet at exactly 3:11 a.m. near the closest tree you could find
Person 1: Hey, do you want to meet behind the school at 3:11 a.m.?
Person 2: Of course! Don't forget to bring your sled!
Person 3: Let's meet at this exact tree at exactly 3:11 a.m.
by secretfilesx December 14, 2019
Get the 3:11 a.m. mug.
The numbers represent letters of the alphabet; 4 is D, 9 is I, and so on. These numbers spell "dick".
I be comin' through like the 4-9-3-11 tearing up the power U" -- Method Man
by PAPI_PERREAME April 24, 2005
Get the 4-9-3-11 mug.
Dick. D is the fourth letter in the alphabet, I is the ninth letter in the alphabet, C is the third letter in the alphabet and K is the eleventh letter in the alphabet.
I prefer an uncircumsized 4-9-3-11
by FlyAway July 20, 2011
Get the 4-9-3-11 mug.
This is the calculator display read "eleven cubed plus six."

1337, or leet.

This is because (11^3)+6=1337

See also, the spoken word: eleven cubed plus six.
ub3r n00b, I pwnt u, i 4m t3h (11^3)+6
by nubluva March 29, 2007
Get the (11^3)+6 mug.
A sun worshipper that deliberately seeks the sun out when official advice tells them to seek shade.
Midday Sun? Im out in it, Im an 11-3 inverter!
by mids99 July 30, 2009
Get the 11-3 inverter mug.