The term "light er up" refers to the act of lighting up any number of smokeable items, such as a bong, pipe, joint, blunt, ciggerette, or cigar. The "er" is an abbreviation of "her", the her refering to whats being lighted.
*rolls blunt*

"light er up son"

"son you blazed that joint goood"
by avonbarksdale September 3, 2009
Get the light er up mug.
1. Smoking you tires
2. Mass amounts of fire power
1. Dude, your car has 500 horsepower, LIGHT EM UP.
2. Theyve got us pinned down, LIGHT EM UP
by Brandon August 12, 2004
Get the light em up mug.
When a game developer drenches everyone and everything in their game with really shiny lighting, to cover up the fact that the graphics are shit. Not to be confused with cel-shading.
Mario Kart Wii, Fallout 3, and Grand Theft Auto IV are great examples of lighting cover-up.
by Christophucked February 3, 2011
Get the Lighting cover-up mug.
When you are daring the cops to pull you over even though you have a no stop policy.
The fuzz is behind us... they can go ahead and light me up, but I’m not going back to prison!
by Alexatorres88 June 28, 2018
Get the light me up mug.
lahy-ting tit-ees uhp -verb

A total eclipse of one's manhood in such a way as to cause the spontaneous combustion of one's titties.
Matt: "Lambda Tau Upsilon just dominated me and the rest of Mees at life."

Winston: "I do believe that you just got your titties lit up by the excellent male specimens of Scharpenberg 4. In fact, I think they will continue lighting titties up for all eternity."
by Hero523 January 20, 2009
Get the Lighting Titties Up mug.
A song (and first single for his second album) written by the beautifully talented, kind human-being named Harry Styles.
Person 1: Have you heard Harry's new song Lights Up

Person 2: Yess! I fucking love it, it sound so good!

Person 1: ikr, don’t even get me started on the 'La da da da da' part bitch
by harrymfnstyles October 16, 2019
Get the Lights Up mug.